how to find tire size

Calculate/Compare

Calculate metric or inch tire specs and compare to alternate tire sizes. View size results with our tire visualizer and side by side comparison including speedometer error using the comparison tab.

Tire Size Visualizer

Tire Front View

Tire Size Comparison Visualizer

Tire 1 Front View

Tire 2 Front View

Speedometer Error
(Set Size1 to OEM Size)

Alternate Tire Sizes

Use the tire calculator to populate a list of alternate tire sizes.

Click on each size to see available tires in that size.

Use our tire size calculator to calculate the diameter, width, sidewall, circumference, and revolutions per mile of any tire. Just type in a metric or standard size tire and click calculate.

Inch measurement tires are fairly easy to understand however metric tires use a more difficult system to read. The first number on a metric tire is the width in millimeters. Divide this number by 25.4 to get the inch equivalent as there is 25.4 mm in 1 inch. The third number generally preceded by an "R" is the wheel diameter. The sidewall or aspect ratio are used in metric tire sizes to determine the overall height of a tire. The second number on a metric tire is to calculate the side wall measurement. The sidewall height is a percentage of the width of the tire. This second number is that percent. The sidewall height or "aspect ratio" of a 285/75/R16 tire is 75% of 285mm.

To calculate the diameter of a metric tire in inches: (#1 x #2 / 2540 x 2) + (#3)

Example: 285/75R16 (285 X 75 / 2540 x 2) + 16 = 32.8 inches tall.

Our tire calculator makes this happen for you. Just type in any tire size and click calculate. It also solves the problem of deciding what tire you would like to run if you have inch tire measurement in mind but can't find a company that manufactures that inch tire size. Just fill in the inch measurements you are looking for and it will populate suggested tire sizes that are with in one inch bigger and smaller of the entered inch tire size. There are more possibilities and choices in metric tires so the use of a tire size calculator can be very useful.

The tire size comparison calculator takes the measurements of two tires and compares the diameter, width, sidewall, circumference, and revolutions per mile. Then as a bonus it shows examples of your speedometer reading with the first tire, and the actual speed you're traveling if you were to install the second tire. A very useful tire calculator when searching for tires that are a different size than stock.

Another tire size calculator we have is our speedometer correction calculator. This is valuable if you plan to or are already running bigger tires than stock, and want to know the speed you are actually traveling compared to you're speedometer reading. A bigger tire has a larger circumference, thus traveling a further distance for each revolution. A speedometer reads the amount of revolutions your tires are making, not how far you are traveling. Therefore you are actually traveling faster than your speedometer says when you have larger tires than stock, and slower than you're speedometer says if you have smaller tires.

Our easy to use tire diameter calculators will always be useful at one time or another. A tire size conversion calculator or tire diameter calculator is the best way to get the answers you are looking for when it comes to tire sizes. What sets us apart is our tire suggestion guide. For each tire size you input our tire calculator suggests multiple tire sizes that are with in one inch bigger and smaller of the entered tire size. Select each link to see a list of tires that are manufactured in that size. Then by clicking on each tire you will be directed to our price comparison guide where we list a number of companies that sell each tire. Follow the price check buttons to view prices from each distributor. Making it as simple as possible to find the tire that is right for you at the best price.

Also browse our tire categories and deals pages for Jeep tires, 4X4 tires, cheap new tires, all weather tires, cheap truck tires, all season tires, and tires with free shipping.

Tire Size Calculator Charts by Wheel Size

Tire Size Calculator Chart for 13" Wheels

21" Tire Diameter

185/60R13 = 21.7x7.3R13
215/50R13 = 21.5X8.5R13
225/45R13 = 21x8.9R13
225/50R13 = 21.9x8.9R13
255/40R13 = 21x10R13

22" Tire Diameter

155/80R13 = 22.8x6.1R13
175/70R13 = 22.6x6.9R13
205/60R13 = 22.7x8.1R13
22X8R13

23" Tire Diameter

165/80R13 = 23.4X6.5R13
185/70R13 = 23.2x7.3R13

24" Tire Diameter

175/80R13 = 24x6.9R13
185/80R13 = 24.7x7.3R13
24.5X8R13
24.5X9R13

Tire Size Calculator Chart for 14" Wheels

19" Tire Diameter

105/70R14 = 19.8X4.1R14

20" Tire Diameter

115/70R14 = 20.3X4.5R14
125/70R14 = 20.9X4.9R14

21" Tire Diameter

165/55R14 = 21.1X6.5R14

22" Tire Diameter

135/80R14 = 22.5X5.3R14
165/65R14 = 22.4x6.5R14
185/55R14 = 22x7.3R14
185/60R14 = 22.7x7.3R14
195/55R14 = 22.4x7.7R14
205/50R14 = 22.1x8.1R14
205/55R14 = 22.9x8.1R14
225/50R14 = 22.9x8.9R14

23" Tire Diameter

175/65R14 = 23x6.9R14
175/70R14 = 23.6x6.9R14
185/65R14 = 23.5x7.3R14
195/60R14 = 23.2x7.7R14
205/60R14 = 23.7x8.1R14

24" Tire Diameter

185/70R14 = 24.2x7.3R14
185/75R14 = 24.9X7.3R14
195/65R14 = 24x7.7R14
195/70R14 = 24.7x7.7R14
215/60R14 = 24.2x8.5R14
225/60R14 = 24.6x8.9R14

25" Tire Diameter

185R14 = 25.7x7.3R14
195/75R14 = 25.5x7.7R14
205/70R14 = 25.3x8.1R14
215/70R14 = 25.9x8.5R14
235/60R14 = 25.1x9.3R14
245/60R14 = 25.6x9.6R14

26" Tire Diameter

195R14 = 26.2x7.8R14
205/75R14 = 26.1x8.1R14
215/75R14 = 26.7x8.5R14
225/70R14 = 26.4x8.9R14
26X8.5R14

27" Tire Diameter

205R14 = 27x8.2R14
27X8.5R14
27X9.5R14

28" Tire Diameter

28X10R14

30" Tire Diameter

30X10R14

Tire Size Calculator Chart for 15" Wheels

20" Tire Diameter

105/70R15 = 20.8X4.1R15

21" Tire Diameter

115/70R15 = 21.3X4.5R15
125/70R15 = 21.9X4.9R15
165/50R15 = 21.5X6.5R15
195/45R15 = 21.9x7.7R15

22" Tire Diameter

125/80R15 = 22.9X4.9R15
145/65R15 = 22.4x5.7R15
155/60R15 = 22.3x6.1R15
165/60R15 = 22.8x6.5R15
175/55R15 = 22.6x6.9R15
195/50R15 = 22.7x7.7R15
22X8R15
22.5X4.5R15
245/40R15 = 22.7X9.6R15
275/35R15 = 22.6x10.8R15

23" Tire Diameter

135/80R15 = 23.5X5.3R15
165/65R15 = 23.4X6.5R15
175/60R15 = 23.3x6.9R15
185/55R15 = 23x7.3R15
185/60R15 = 23.7x7.3R15
195/55R15 = 23.4x7.7R15
205/50R15 = 23.1x8.1R15
205/55R15 = 23.9x8.1R15
225/45R15 = 23x8.9R15
225/50R15 = 23.9x8.9R15
295/35R15 = 23.1X11.6R15

24" Tire Diameter

135/90R15 = 24.6X5.3R15
155/80R15 = 24.8X6.1R15
175/65R15 = 24x6.9R15
185/65R15 = 24.5x7.3R15
195/60R15 = 24.2x7.7R15
205/60R15 = 24.7x8.1R15
225/55R15 = 24.7x8.9R15
235/50R15 = 24.3x9.3R15
24X4.5R15
24X5R15
24.5X8R15
245/50R15 = 24.6x9.6R15
345/35R15 = 24.5x13.6R15

25" Tire Diameter

165/80R15 = 25.4X6.5R15
185/70R15 = 25.2x7.3R15
195/65R15 = 25x7.7R15
195/70R15 = 25.7x7.7R15
205/65R15 = 25.5x8.1R15
215/60R15 = 25.2x8.5R15
225/60R15 = 25.6x8.9R15
265/50R15 = 25.4X10.4R15
275/50R15 = 25.8x10.8R15

26" Tire Diameter

205/70R15 = 26.3x8.1R15
215/65R15 = 26x8.5R15
215/70R15 = 26.9x8.5R15
235/60R15 = 26.1x9.3R15
245/60R15 = 26.6x9.6R15
26X10R15
26X10.5R15
26X11.5R15
26X6R15
26X7.5R15
26X8R15
26X8.5R15
295/50R15 = 26.6x11.6R15

27" Tire Diameter

205/75R15 = 27.1x8.1R15
215/75R15 = 27.7x8.5R15
225/70R15 = 27.4x8.9R15
255/60R15 = 27x10R15
27X10.5R15
27X9.5R15
27.5X4.5R15
295/55R15 = 27.8X11.6R15
325/50R15 = 27.8x12.8R15
E78-15 = 27x6.5R15

28" Tire Diameter

225/75R15 = 28.3x8.9R15
235/70R15 = 28x9.3R15
235/75R15 = 28.9x9.3R15
245/70R15 = 28.5X9.6R15
255/65R15 = 28.1x10R15
275/60R15 = 28x10.8R15
28X10.5R15
28X11.5R15
28X12.5R15
28X13.5R15
28X4.5R15
28X7.5R15
28X9R15

29" Tire Diameter

215/85R15 = 29.4X8.5R15
255/70R15 = 29.1x10R15
265/70R15 = 29.6x10.4R15
29X10.5R15
29X11.5R15
29X12.5R15
29X15.5R15
29X18R15
29X18.5R15
29X4.5R15
29X8.5R15
29.5X11.5R15
29.5X13.5R15
29.5X9R15
315/60R15 = 29.9x12.4R15
7R15 = 29.5x7.7R15

30" Tire Diameter

255/75R15 = 30.1x10R15
265/75R15 = 30.6x10.4R15
295/65R15 = 30.1x11.6R15
30X10R15
30X10.5R15
30X11.5R15
30X12.5R15
30X13.5R15
30X7R15
30X9R15
30X9.5R15

31" Tire Diameter

31X10.5R15
31X11R15
31X11.5R15
31X12.5R15
31X13R15
31X13.5R15
31X14.5R15
31X16.5R15
31X18R15
31X18.5R15
31X9.5R15

32" Tire Diameter

32X10.5R15
32X11.5R15
32X14R15
32X16R15
32X17.5R15
32X18.5R15
32X9.5R15

33" Tire Diameter

33X10.5R15
33X11.5R15
33X12.5R15
33X13R15
33X13.5R15
33X14R15
33X14.5R15
33X15.5R15
33X16.5R15
33X19.5R15
33X21.5R15
33X9R15
33X9.5R15

34" Tire Diameter

34X10.5R15
34X12.5R15
34X9.5R15

35" Tire Diameter

35X10.5R15
35X12.5R15
35X13.5R15
35X14.5R15
35X15R15
35X15.5R15
35X16R15

36" Tire Diameter

36X12.5R15
36X13.5R15
36X14.5R15

37" Tire Diameter

37X12.5R15
37X13R15
37X13.5R15
37X14R15
37X14.5R15

38" Tire Diameter

38X12.5R15
38X13R15
38X14.5R15
38X15.5R15
38.5X11R15
38.5X13.5R15
38.5X14.5R15
38.5X15R15
38.5X16R15

39" Tire Diameter

39X13.5R15
39.5X13.5R15
39.5X15R15
39.5X18R15

40" Tire Diameter

40X16R15

42" Tire Diameter

42X14R15
42X15R15
42.5X13.5R15

44" Tire Diameter

44X18.5R15
44X19.5R15
44X21R15

47" Tire Diameter

47X17R15

Tire Size Calculator Chart for 16" Wheels

22" Tire Diameter

125/70R16 = 22.9X4.9R16
175/50R16 = 22.9x6.9R16
195/40R16 = 22.1x7.7R16
195/45R16 = 22.9x7.7R16
205/40R16 = 22.5x8.1R16
215/35R16 = 21.9x8.5R16
215/40R16 = 22.8x8.5R16

23" Tire Diameter

125/80R16 = 23.9X4.9R16
135/70R16 = 23.4X5.3R16
175/55R16 = 23.6x6.9R16
185/50R16 = 23.3X7.3R16
195/50R16 = 23.7x7.7R16
205/45R16 = 23.3x8.1R16
215/45R16 = 23.6x8.5R16

24" Tire Diameter

125/85R16 = 24.4X4.9R16
125/90R16 = 24.9X4.9R16
135/80R16 = 24.5X5.3R16
175/60R16 = 24.3x6.9R16
185/55R16 = 24x7.3R16
185/60R16 = 24.7X7.3R16
195/55R16 = 24.4x7.7R16
205/50R16 = 24.1x8.1R16
205/55R16 = 24.9x8.1R16
215/50R16 = 24.5X8.5R16
225/45R16 = 24x8.9R16
225/50R16 = 24.9x8.9R16
245/45R16 = 24.7x9.6R16

25" Tire Diameter

135/90R16 = 25.6X5.3R16
145/80R16 = 25.1X5.7R16
195/60R16 = 25.2x7.7R16
205/60R16 = 25.7x8.1R16
215/55R16 = 25.3x8.5R16
225/55R16 = 25.7x8.9R16
245/50R16 = 25.6x9.6R16
265/45R16 = 25.4X10.4R16
275/45R16 = 25.7x10.8R16
315/40R16 = 25.9X12.4R16

26" Tire Diameter

145/90R16 = 26.3X5.7R16
145/90R16 = 26.3X5.7R16
195/65R16 = 26X7.7R16
205/65R16 = 26.5x8.1R16
215/60R16 = 26.2x8.5R16
225/60R16 = 26.6x8.9R16
235/55R16 = 26.2x9.3R16
255/50R16 = 26x10R16
26X11.5R16

27" Tire Diameter

155/90R16 = 27X6.1R16
195/75R16 = 27.5x7.7R16
205/70R16 = 27.3x8.1R16
215/65R16 = 27x8.5R16
215/70R16 = 27.9x8.5R16
225/65R16 = 27.5x8.9R16
235/60R16 = 27.1x9.3R16
295/50R16 = 27.6x11.6R16
355/40R16 = 27.2X14R16

28" Tire Diameter

195/80R16 = 28.3x7.7R16
205/75R16 = 28.1X8.1R16
205/80R16 = 28.9x8.1R16
215/75R16 = 28.7x8.5R16
225/70R16 = 28.4x8.9R16
235/65R16 = 28x9.3R16
255/60R16 = 28x10R16
28X11.5R16

29" Tire Diameter

225/75R16 = 29.3x8.9R16
235/70R16 = 29x9.3R16
235/75R16 = 29.9x9.3R16
245/70R16 = 29.5x9.6R16
255/65R16 = 29.1x10R16
275/60R16 = 29X10.8R16
285/60R16 = 29.5X11.2R16

30" Tire Diameter

215/85R16 = 30.4x8.5R16
235/80R16 = 30.8x9.3R16
245/75R16 = 30.5x9.6R16
255/70R16 = 30.1x10R16
265/70R16 = 30.6x10.4R16
285/65R16 = 30.6X11.2R16
30X11.5R16

31" Tire Diameter

225/85R16 = 31.1X8.9R16
235/85R16 = 31.7x9.3R16
265/75R16 = 31.6x10.4R16
275/70R16 = 31.2x10.8R16
285/70R16 = 31.7x11.2R16
31X10.5R16
31X11R16
31X11.5R16
31X12.5R16
7.5R16 = 31.8x8.7R16

32" Tire Diameter

265/80R16 = 32.7X10.4R16
285/75R16 = 32.8x11.2R16
305/70R16 = 32.8x12R16
32X10R16
32X11.5R16
32X9R16

33" Tire Diameter

255/85R16 = 33.1x10R16
295/75R16 = 33.4x11.6R16
33X10.5R16
33X11.5R16
33X12.5R16
33X13R16
33X13.5R16
33X14R16
33X14.5R16
33X9.5R16
33.5X16.5R16

34" Tire Diameter

315/75R16 = 34.6x12.4R16
34X10.5R16
34X12.5R16
34X13.5R16
34X9R16
34.5X17R16

35" Tire Diameter

35X10.5R16
35X12.5R16
35X14.5R16
35X15R16
35X16R16
375/65R16 = 35.2x14.8R16

36" Tire Diameter

325/80R16 = 36.5x12.8R16
345/75R16 = 36.4x13.6R16
36X12.5R16
36X13R16
36X13.5R16
36X14.5R16

37" Tire Diameter

365/75R16 = 37.6x14.4R16
37X12.5R16
37X13R16
37X13.5R16
37X14R16
37X14.5R16
385/70R16 = 37.2x15.2R16
395/70R16 = 37.8x15.6R16

38" Tire Diameter

38X13R16
38X14.5R16
38X15.5R16
38.5X11R16
38.5X13.5R16
38.5X14.5R16
38.5X15R16

39" Tire Diameter

39X13.5R16
39.5X13.5R16
39.5X15R16

40" Tire Diameter

40X16R16

41" Tire Diameter

41X14.5R16

42" Tire Diameter

42X14R16
42X15R16
42.5X13.5R16

44" Tire Diameter

44X19.5R16
44X21R16

46" Tire Diameter

46X19.5R16

Tire Size Calculator Chart for 16.5" Wheels

29" Tire Diameter

8.75R16.5 = 29.5x8.8R16.5

30" Tire Diameter

9.5R16.5 = 30.6x9.5R16.5

32" Tire Diameter

32X12R16.5

33" Tire Diameter

33X11.5R16.5
33X12.5R16.5
33X14R16.5
33X14.5R16.5
33X15.5R16.5

35" Tire Diameter

35X12.5R16.5
35X14.5R16.5
35X15R16.5
35X15.5R16.5
35X16R16.5
35X9.5R16.5

36" Tire Diameter

36X12.5R16.5
36X13.5R16.5
36X14.5R16.5
36X16R16.5

37" Tire Diameter

37X12.5R16.5
37X13R16.5
37X14R16.5

38" Tire Diameter

38X11R16.5
38X12.5R16.5
38X15.5R16.5
38.5X11R16.5
38.5X13.5R16.5
38.5X14.5R16.5
38.5X15R16.5
38.5X16R16.5

39" Tire Diameter

39X13.5R16.5
39.5X13.5R16.5
39.5X15R16.5
39.5X18R16.5

42" Tire Diameter

42X14R16.5
42X15R16.5
42.5X13.5R16.5

43" Tire Diameter

43X14.5R16.5

44" Tire Diameter

44X18.5R16.5
44X18.5R16.5
44X19.5R16.5
44X21R16.5

47" Tire Diameter

47X17R16.5

48" Tire Diameter

48X12.5R16.5

49" Tire Diameter

49X21R16.5

Tire Size Calculator Chart for 17" Wheels

22" Tire Diameter

22X2.5R17

23" Tire Diameter

125/70R17 = 23.9X4.9R17
195/40R17 = 23.1x7.7R17
195/45R17 = 23.9x7.7R17
205/40R17 = 23.5x8.1R17
215/35R17 = 22.9x8.5R17
215/40R17 = 23.8x8.5R17
225/35R17 = 23.2x8.9R17
245/35R17 = 23.8x9.6R17

24" Tire Diameter

125/80R17 = 24.9X4.9R17
135/70R17 = 24.4X5.3R17
205/45R17 = 24.3x8.1R17
215/45R17 = 24.6x8.5R17
225/40R17 = 24.1x8.9R17
235/40R17 = 24.4x9.3R17
245/40R17 = 24.7x9.6R17
275/35R17 = 24.6x10.8R17

25" Tire Diameter

115/95R17 = 25.6X4.5R17
135/80R17 = 25.5X5.3R17
145/70R17 = 25X5.7R17
155/70R17 = 25.5X6.1R17
205/50R17 = 25.1x8.1R17
205/55R17 = 25.9x8.1R17
215/50R17 = 25.5X8.5R17
225/45R17 = 25x8.9R17
225/50R17 = 25.9x8.9R17
235/45R17 = 25.3x9.3R17
245/45R17 = 25.7x9.6R17
255/40R17 = 25x10R17
265/40R17 = 25.3x10.4R17
275/40R17 = 25.7x10.8R17
295/35R17 = 25.1x11.6R17
315/35R17 = 25.7x12.4R17

26" Tire Diameter

135/90R17 = 26.6X5.3R17
145/80R17 = 26.1X5.7R17
155/80R17 = 26.8X6.1R17
215/55R17 = 26.3x8.5R17
225/55R17 = 26.7x8.9R17
235/50R17 = 26.3x9.3R17
245/50R17 = 26.6x9.6R17
255/45R17 = 26x10R17
26X11.5R17
285/40R17 = 26x11.2R17
295/40R17 = 26.3x11.6R17
335/35R17 = 26.2x13.2R17

27" Tire Diameter

145/90R17 = 27.3X5.7R17
165/80R17 = 27.4X6.5R17
215/60R17 = 27.2x8.5R17
225/60R17 = 27.6x8.9R17
235/55R17 = 27.2x9.3R17
245/55R17 = 27.6x9.6R17
255/50R17 = 27x10R17
275/50R17 = 27.8X10.8R17
305/45R17 = 27.8X12R17
345/40R17 = 27.9x13.6R17

28" Tire Diameter

155/90R17 = 28X6.1R17
165/90R17 = 28.7X6.5R17
215/65R17 = 28x8.5R17
215/70R17 = 28.9x8.5R17
225/65R17 = 28.5x8.9R17
235/60R17 = 28.1x9.3R17
245/60R17 = 28.6X9.6R17
255/55R17 = 28x10R17
275/55R17 = 28.9x10.8R17

29" Tire Diameter

175/90R17 = 29.4X6.9R17
225/70R17 = 29.4x8.9R17
235/65R17 = 29x9.3R17
245/65R17 = 29.5x9.6R17
255/60R17 = 29x10R17
265/60R17 = 29.5x10.4R17

30" Tire Diameter

225/75R17 = 30.3x8.9R17
235/70R17 = 30x9.3R17
235/75R17 = 30.9x9.3R17
245/70R17 = 30.5x9.6R17
255/65R17 = 30.1x10R17
265/65R17 = 30.6x10.4R17
275/60R17 = 30x10.8R17
285/60R17 = 30.5X11.2R17

31" Tire Diameter

235/80R17 = 31.8x9.3R17
245/75R17 = 31.5x9.6R17
255/70R17 = 31.1x10R17
265/70R17 = 31.6x10.4R17
275/65R17 = 31.1x10.8R17
285/65R17 = 31.6x11.2R17
31X10.5R17

32" Tire Diameter

235/85R17 = 32.7X9.3R17
255/75R17 = 32.1x10R17
275/70R17 = 32.2x10.8R17
285/70R17 = 32.7x11.2R17
305/65R17 = 32.6x12R17
32X10.5R17
32X11.5R17

33" Tire Diameter

255/80R17 = 33.1x10R17
285/75R17 = 33.8x11.2R17
295/70R17 = 33.3x11.6R17
305/70R17 = 33.8x12R17
33X10.5R17
33X12.5R17
33X13R17
33X13.5R17
33X9.5R17

34" Tire Diameter

275/80R17 = 34.3X10.8R17
315/70R17 = 34.4x12.4R17
325/70R17 = 34.9x12.8R17
34X10.5R17

35" Tire Diameter

35X10.5R17
35X11.5R17
35X12.5R17
35X13.5R17
35X14.5R17

36" Tire Diameter

355/70R17 = 36.6x14R17
36X12.5R17
36X13.5R17

37" Tire Diameter

37X12.5R17
37X13R17
37X13.5R17
37X14R17

38" Tire Diameter

38X13.5R17
38X14.5R17
38X15.5R17
38.5X13.5R17
38.5X14.5R17

39" Tire Diameter

39X13.5R17
39.5X13.5R17
39.5X15R17

40" Tire Diameter

40X13.5R17
40X14.5R17
40X16R17

41" Tire Diameter

41X14.5R17

42" Tire Diameter

42X14R17
42X14.5R17
42X15R17
42.5X13.5R17

43" Tire Diameter

43X14.5R17

44" Tire Diameter

44X19.5R17
44X21R17

47" Tire Diameter

47X17R17

49" Tire Diameter

49X21R17

54" Tire Diameter

54X19.5R17

Tire Size Calculator Chart for 18" Wheels

23" Tire Diameter

215/35R18 = 23.9x8.5R18

24" Tire Diameter

125/70R18 = 24.9X4.9R18
205/40R18 = 24.5x8.1R18
215/40R18 = 24.8x8.5R18
225/35R18 = 24.2x8.9R18
235/35R18 = 24.5x9.3R18
245/35R18 = 24.8x9.6R18
285/30R18 = 24.7x11.2R18

25" Tire Diameter

135/70R18 = 25.4X5.3R18
155/60R18 = 25.3X6.1R18
215/45R18 = 25.6x8.5R18
225/40R18 = 25.1x8.9R18
235/40R18 = 25.4x9.3R18
245/40R18 = 25.7x9.6R18
255/35R18 = 25x10R18
265/35R18 = 25.3x10.4R18
275/35R18 = 25.6x10.8R18
285/35R18 = 25.9x11.2R18
295/30R18 = 25x11.6R18
305/30R18 = 25.2x12R18
315/30R18 = 25.4x12.4R18
335/30R18 = 25.9x13.2R18

26" Tire Diameter

135/80R18 = 26.5X5.3R18
145/70R18 = 26X5.7R18
215/50R18 = 26.5X8.5R18
225/45R18 = 26x8.9R18
225/50R18 = 26.9x8.9R18
235/45R18 = 26.3x9.3R18
245/45R18 = 26.7x9.6R18
255/40R18 = 26x10R18
26X12R18
265/40R18 = 26.3x10.4R18
275/40R18 = 26.7x10.8R18
295/35R18 = 26.1x11.6R18
305/35R18 = 26.4x12R18
315/35R18 = 26.7x12.4R18
345/30R18 = 26.1x13.6R18

27" Tire Diameter

145/80R18 = 27.1X5.7R18
145/85R18 = 27.7X5.7R18
215/55R18 = 27.3x8.5R18
225/55R18 = 27.7x8.9R18
235/50R18 = 27.3x9.3R18
245/50R18 = 27.6x9.6R18
255/45R18 = 27x10R18
265/45R18 = 27.4x10.4R18
275/45R18 = 27.7x10.8R18
285/40R18 = 27x11.2R18
295/40R18 = 27.3x11.6R18
305/40R18 = 27.6X12R18
315/40R18 = 27.9x12.4R18
325/35R18 = 27x12.8R18
345/35R18 = 27.5x13.6R18

28" Tire Diameter

155/85R18 = 28.4X6.1R18
225/60R18 = 28.6x8.9R18
235/55R18 = 28.2x9.3R18
245/55R18 = 28.6x9.6R18
255/50R18 = 28x10R18
265/50R18 = 28.4X10.4R18
285/45R18 = 28.1x11.2R18
295/45R18 = 28.5x11.6R18
305/45R18 = 28.8X12R18

29" Tire Diameter

155/90R18 = 29X6.1R18
165/90R18 = 29.7X6.5R18
225/65R18 = 29.5X8.9R18
235/60R18 = 29.1x9.3R18
245/60R18 = 29.6x9.6R18
255/55R18 = 29x10R18
265/55R18 = 29.5X10.4R18
275/55R18 = 29.9x10.8R18
285/50R18 = 29.2x11.2R18
325/45R18 = 29.5X12.8R18

30" Tire Diameter

175/90R18 = 30.4X6.9R18
235/65R18 = 30x9.3R18
245/65R18 = 30.5x9.6R18
255/60R18 = 30x10R18
265/60R18 = 30.5x10.4R18
285/55R18 = 30.3x11.2R18

31" Tire Diameter

235/70R18 = 31X9.3R18
255/65R18 = 31.1x10R18
265/65R18 = 31.6x10.4R18
275/60R18 = 31x10.8R18
285/60R18 = 31.5x11.2R18

32" Tire Diameter

255/70R18 = 32.1x10R18
265/70R18 = 32.6x10.4R18
275/65R18 = 32.1x10.8R18
285/65R18 = 32.6x11.2R18
305/60R18 = 32.4x12R18

33" Tire Diameter

275/70R18 = 33.2x10.8R18
285/70R18 = 33.7x11.2R18
295/65R18 = 33.1x11.6R18
305/65R18 = 33.6x12R18
325/60R18 = 33.4x12.8R18
33X10.5R18
33X11.5R18
33X12.5R18
33X13R18
33X13.5R18

34" Tire Diameter

285/75R18 = 34.8x11.2R18
295/70R18 = 34.3X11.6R18
305/70R18 = 34.8x12R18
325/65R18 = 34.6x12.8R18
34X12.5R18

35" Tire Diameter

315/70R18 = 35.4x12.4R18
35X11.5R18
35X12.5R18
35X13R18
35X13.5R18
35X14.5R18

36" Tire Diameter

355/65R18 = 36.2x14R18
36X13.5R18

37" Tire Diameter

37X11.5R18
37X12.5R18
37X13.5R18

38" Tire Diameter

38X13.5R18
38X14.5R18
38X15R18
38X15.5R18
38.5X14.5R18

40" Tire Diameter

40X13.5R18
40X14.5R18

41" Tire Diameter

41X14.5R18

Tire Size Calculator Chart for 19" Wheels

24" Tire Diameter

215/35R19 = 24.9x8.5R19
235/30R19 = 24.6x9.3R19
245/30R19 = 24.8x9.6R19
295/25R19 = 24.8X11.6R19

25" Tire Diameter

115/70R19 = 25.3X4.5R19
125/70R19 = 25.9X4.9R19
225/35R19 = 25.2x8.9R19
235/35R19 = 25.5x9.3R19
245/35R19 = 25.8x9.6R19
255/30R19 = 25x10R19
265/30R19 = 25.3x10.4R19
275/30R19 = 25.5x10.8R19
285/30R19 = 25.7x11.2R19
315/25R19 = 25.2x12.4R19

26" Tire Diameter

135/70R19 = 26.4X5.3R19
225/40R19 = 26.1x8.9R19
235/40R19 = 26.4x9.3R19
245/40R19 = 26.7x9.6R19
255/35R19 = 26x10R19
265/35R19 = 26.3x10.4R19
275/35R19 = 26.6x10.8R19
285/35R19 = 26.9x11.2R19
295/30R19 = 26x11.6R19
305/30R19 = 26.2x12R19
315/30R19 = 26.4x12.4R19
325/30R19 = 26.7x12.8R19
335/30R19 = 26.9x13.2R19

27" Tire Diameter

155/70R19 = 27.5x6.1R19
175/60R19 = 27.3x6.9R19
225/45R19 = 27x8.9R19
235/45R19 = 27.3x9.3R19
245/45R19 = 27.7x9.6R19
255/40R19 = 27x10R19
265/40R19 = 27.3x10.4R19
275/40R19 = 27.7x10.8R19
295/35R19 = 27.1x11.6R19
305/35R19 = 27.4X12R19
315/35R19 = 27.7x12.4R19
345/30R19 = 27.1x13.6R19
355/30R19 = 27.4x14R19

28" Tire Diameter

145/80R19 = 28.1X5.7R19
155/80R19 = 28.8X6.1R19
225/55R19 = 28.7x8.9R19
235/50R19 = 28.3x9.3R19
245/50R19 = 28.6x9.6R19
255/45R19 = 28x10R19
265/45R19 = 28.4X10.4R19
275/45R19 = 28.7x10.8R19
285/40R19 = 28x11.2R19
295/40R19 = 28.3X11.6R19
315/40R19 = 28.9x12.4R19
345/35R19 = 28.5x13.6R19

29" Tire Diameter

235/55R19 = 29.2x9.3R19
245/55R19 = 29.6x9.6R19
255/50R19 = 29x10R19
265/50R19 = 29.4x10.4R19
275/50R19 = 29.8X10.8R19
285/45R19 = 29.1x11.2R19
295/45R19 = 29.5x11.6R19

30" Tire Diameter

165/90R19 = 30.7X6.5R19
175/80R19 = 30X6.9R19
255/55R19 = 30x10R19
265/55R19 = 30.5x10.4R19
275/55R19 = 30.9x10.8R19

31" Tire Diameter

235/65R19 = 31X9.3R19
255/60R19 = 31x10R19

Tire Size Calculator Chart for 20" Wheels

25" Tire Diameter

215/30R20 = 25.1X8.5R20
225/30R20 = 25.3x8.9R20
235/30R20 = 25.6x9.3R20
245/30R20 = 25.8x9.6R20
275/25R20 = 25.4X10.8R20
285/25R20 = 25.6x11.2R20
295/25R20 = 25.8x11.6R20

26" Tire Diameter

145/60R20 = 26.9X5.7R20
225/35R20 = 26.2x8.9R20
235/35R20 = 26.5x9.3R20
245/35R20 = 26.8x9.6R20
255/30R20 = 26x10R20
265/30R20 = 26.3x10.4R20
275/30R20 = 26.5x10.8R20
285/30R20 = 26.7x11.2R20
305/25R20 = 26x12R20
315/25R20 = 26.2x12.4R20
325/25R20 = 26.4x12.8R20
335/25R20 = 26.6x13.2R20
345/25R20 = 26.8X13.6R20

27" Tire Diameter

155/60R20 = 27.3x6.1R20
155/65R20 = 27.9X6.1R20
165/60R20 = 27.8X6.5R20
175/55R20 = 27.6x6.9R20
195/50R20 = 27.7x7.7R20
215/45R20 = 27.6x8.5R20
225/40R20 = 27.1X8.9R20
235/40R20 = 27.4x9.3R20
245/40R20 = 27.7x9.6R20
255/35R20 = 27x10R20
265/35R20 = 27.3x10.4R20
275/35R20 = 27.6x10.8R20
285/35R20 = 27.9x11.2R20
295/30R20 = 27x11.6R20
305/30R20 = 27.2x12R20
315/30R20 = 27.4x12.4R20
325/30R20 = 27.7x12.8R20
335/30R20 = 27.9x13.2R20

28" Tire Diameter

225/45R20 = 28X8.9R20
235/45R20 = 28.3x9.3R20
245/45R20 = 28.7x9.6R20
255/40R20 = 28x10R20
265/40R20 = 28.3x10.4R20
275/40R20 = 28.7x10.8R20
295/35R20 = 28.1x11.6R20
305/35R20 = 28.4x12R20
315/35R20 = 28.7x12.4R20
345/30R20 = 28.1x13.6R20

29" Tire Diameter

235/50R20 = 29.3X9.3R20
245/50R20 = 29.6x9.6R20
255/45R20 = 29x10R20
265/45R20 = 29.4x10.4R20
275/45R20 = 29.7x10.8R20
285/40R20 = 29x11.2R20
295/40R20 = 29.3x11.6R20
305/40R20 = 29.6X12R20
325/35R20 = 29X12.8R20

30" Tire Diameter

235/55R20 = 30.2x9.3R20
255/50R20 = 30x10R20
265/50R20 = 30.4x10.4R20
275/50R20 = 30.8x10.8R20
285/45R20 = 30.1X11.2R20
295/45R20 = 30.5x11.6R20
305/45R20 = 30.8x12R20

31" Tire Diameter

245/60R20 = 31.6x9.6R20
255/55R20 = 31x10R20
275/55R20 = 31.9x10.8R20
285/50R20 = 31.2x11.2R20
295/50R20 = 31.6x11.6R20
31X18R20

32" Tire Diameter

265/60R20 = 32.5x10.4R20
285/55R20 = 32.3x11.2R20
295/55R20 = 32.8X11.6R20
305/50R20 = 32x12R20
315/50R20 = 32.4x12.4R20
325/50R20 = 32.8x12.8R20

33" Tire Diameter

275/60R20 = 33x10.8R20
285/60R20 = 33.5x11.2R20
295/60R20 = 33.9X11.6R20
305/55R20 = 33.2x12R20
33X11.5R20
33X12R20
33X12.5R20
33X13.5R20

34" Tire Diameter

275/65R20 = 34.1x10.8R20
285/65R20 = 34.6x11.2R20
305/60R20 = 34.4x12R20
315/60R20 = 34.9x12.4R20
355/50R20 = 34X14R20

35" Tire Diameter

295/65R20 = 35.1X11.6R20
325/60R20 = 35.4x12.8R20
35X11.5R20
35X12.5R20
35X13R20
35X13.5R20
35X14.5R20

36" Tire Diameter

355/60R20 = 36.8x14R20
36X13.5R20
36X15.5R20

37" Tire Diameter

37X11.5R20
37X12.5R20
37X13.5R20
37X14.5R20

38" Tire Diameter

38X13.5R20
38X14.5R20
38X15.5R20
38.5X13.5R20
38.5X14.5R20

39" Tire Diameter

39X13.5R20
39.5X13.5R20
39.5X15R20

40" Tire Diameter

40X13.5R20
40X14.5R20
40X15.5R20

41" Tire Diameter

41X14.5R20

42" Tire Diameter

42X14.5R20
42X15R20
42.5X13.5R20

43" Tire Diameter

43X14.5R20

44" Tire Diameter

44X19.5R20
44X19.5R20
44X21R20

45" Tire Diameter

45X14.5R20

46" Tire Diameter

46X19.5R20

49" Tire Diameter

49X21R20

54" Tire Diameter

54X19.5R20

Tire Size Calculator Chart for 21" Wheels

26" Tire Diameter

245/30R21 = 26.8x9.6R21
295/25R21 = 26.8x11.6R21

27" Tire Diameter

245/35R21 = 27.8x9.6R21
255/30R21 = 27x10R21
265/30R21 = 27.3x10.4R21
275/30R21 = 27.5x10.8R21
285/30R21 = 27.7x11.2R21
305/25R21 = 27x12R21
325/25R21 = 27.4x12.8R21

28" Tire Diameter

245/40R21 = 28.7x9.6R21
255/35R21 = 28X10R21
265/35R21 = 28.3x10.4R21
275/35R21 = 28.6x10.8R21
285/35R21 = 28.9x11.2R21
295/30R21 = 28x11.6R21
305/30R21 = 28.2x12R21
315/30R21 = 28.4X12.4R21
325/30R21 = 28.7x12.8R21
355/25R21 = 28x14R21

29" Tire Diameter

245/45R21 = 29.7X9.6R21
255/40R21 = 29X10R21
265/40R21 = 29.3x10.4R21
275/40R21 = 29.7x10.8R21
295/35R21 = 29.1x11.6R21
305/35R21 = 29.4X12R21
315/35R21 = 29.7X12.4R21

30" Tire Diameter

265/45R21 = 30.4x10.4R21
275/45R21 = 30.7x10.8R21
285/40R21 = 30X11.2R21
295/40R21 = 30.3x11.6R21
315/40R21 = 30.9X12.4R21

31" Tire Diameter

255/50R21 = 31x10R21
275/50R21 = 31.8X10.8R21
285/45R21 = 31.1x11.2R21
325/40R21 = 31.2X12.8R21

Tire Size Calculator Chart for 22" Wheels

27" Tire Diameter

235/30R22 = 27.6x9.3R22
245/30R22 = 27.8x9.6R22
275/25R22 = 27.4x10.8R22
285/25R22 = 27.6x11.2R22
295/25R22 = 27.8x11.6R22

28" Tire Diameter

255/30R22 = 28x10R22
265/30R22 = 28.3x10.4R22
275/30R22 = 28.5X10.8R22
285/30R22 = 28.7x11.2R22
305/25R22 = 28x12R22
315/25R22 = 28.2x12.4R22
335/25R22 = 28.6x13.2R22

29" Tire Diameter

255/35R22 = 29x10R22
265/35R22 = 29.3x10.4R22
275/35R22 = 29.6X10.8R22
285/35R22 = 29.9x11.2R22
295/30R22 = 29x11.6R22
305/30R22 = 29.2x12R22
315/30R22 = 29.4X12.4R22

30" Tire Diameter

255/40R22 = 30X10R22
265/40R22 = 30.3x10.4R22
275/40R22 = 30.7x10.8R22
295/35R22 = 30.1X11.6R22
305/35R22 = 30.4X12R22
315/35R22 = 30.7X12.4R22

31" Tire Diameter

255/45R22 = 31X10R22
265/45R22 = 31.4X10.4R22
275/45R22 = 31.7x10.8R22
285/40R22 = 31x11.2R22
295/40R22 = 31.3x11.6R22
305/40R22 = 31.6x12R22
325/35R22 = 31X12.8R22

32" Tire Diameter

275/50R22 = 32.8x10.8R22
285/45R22 = 32.1x11.2R22
305/45R22 = 32.8x12R22

33" Tire Diameter

285/50R22 = 33.2x11.2R22
33X12.5R22
33X14.5R22
355/40R22 = 33.2X14R22

34" Tire Diameter

285/55R22 = 34.3X11.2R22
295/55R22 = 34.8X11.6R22
305/50R22 = 34x12R22
325/50R22 = 34.8x12.8R22

35" Tire Diameter

35X12.5R22
35X14.5R22
35X15.5R22
375/45R22 = 35.3X14.8R22

36" Tire Diameter

325/55R22 = 36.1x12.8R22
335/55R22 = 36.5X13.2R22

37" Tire Diameter

325/60R22 = 37.4x12.8R22
37X12.5R22
37X13.5R22

38" Tire Diameter

355/60R22 = 38.8x14R22
38X13.5R22
38X15.5R22

40" Tire Diameter

40X14.5R22
40X15.5R22

41" Tire Diameter

41X14.5R22

42" Tire Diameter

42.5X13.5R22

Tire Size Calculator Chart for 23" Wheels

28" Tire Diameter

265/25R23 = 28.2X10.4R23

30" Tire Diameter

285/35R23 = 30.9x11.2R23
325/30R23 = 30.7X12.8R23

31" Tire Diameter

275/40R23 = 31.7X10.8R23

32" Tire Diameter

285/40R23 = 32x11.2R23
305/40R23 = 32.6x12R23
325/35R23 = 32X12.8R23

Tire Size Calculator Chart for 24" Wheels

29" Tire Diameter

275/25R24 = 29.4x10.8R24

30" Tire Diameter

255/30R24 = 30x10R24
275/30R24 = 30.5x10.8R24
285/30R24 = 30.7x11.2R24

31" Tire Diameter

285/35R24 = 31.9x11.2R24
295/30R24 = 31X11.6R24

32" Tire Diameter

295/35R24 = 32.1x11.6R24
305/35R24 = 32.4x12R24
315/35R24 = 32.7x12.4R24
405/25R24 = 32x15.9R24

33" Tire Diameter

285/40R24 = 33x11.2R24
295/40R24 = 33.3x11.6R24

34" Tire Diameter

385/35R24 = 34.6x15.2R24

35" Tire Diameter

325/45R24 = 35.5x12.8R24
35X12.5R24
35X13.5R24
375/40R24 = 35.8X14.8R24

36" Tire Diameter

315/50R24 = 36.4X12.4R24

37" Tire Diameter

37X13.5R24
37X14.5R24

38" Tire Diameter

38X13.5R24
38X14R24
38X15.5R24

40" Tire Diameter

40X13.5R24
40X14.5R24
40X15.5R24

42" Tire Diameter

42X15.5R24

Tire Size Calculator Chart for 26" Wheels

31" Tire Diameter

275/25R26 = 31.4x10.8R26
295/25R26 = 31.8x11.6R26

33" Tire Diameter

295/30R26 = 33x11.6R26
305/30R26 = 33.2x12R26

35" Tire Diameter

315/40R26 = 35.9x12.4R26

37" Tire Diameter

37X13.5R26

38" Tire Diameter

38X15.5R26

40" Tire Diameter

40X13.5R26
40X15.5R26

42" Tire Diameter

42X15.5R26

Tire Size Calculator Chart for 28" Wheels

33" Tire Diameter

295/25R28 = 33.8x11.6R28

37" Tire Diameter

325/35R28 = 37x12.8R28

40" Tire Diameter

40X15.5R28

42" Tire Diameter

42X15.5R28

Tire Size Calculator Chart for 30" Wheels

37" Tire Diameter

315/30R30 = 37.4x12.4R30

Tire Size Calculator Charts by Diameter

21" Diameter Tire Calculator Chart

13" Wheel Size

185/60R13 = 21.7x7.3R13
215/50R13 = 21.5X8.5R13
225/45R13 = 21x8.9R13
225/50R13 = 21.9x8.9R13
255/40R13 = 21x10R13

14" Wheel Size

165/55R14 = 21.1X6.5R14

15" Wheel Size

115/70R15 = 21.3X4.5R15
125/70R15 = 21.9X4.9R15
165/50R15 = 21.5X6.5R15
195/45R15 = 21.9x7.7R15

22" Diameter Tire Calculator Chart

13" Wheel Size

155/80R13 = 22.8x6.1R13
175/70R13 = 22.6x6.9R13
205/60R13 = 22.7x8.1R13
22X8R13

14" Wheel Size

135/80R14 = 22.5X5.3R14
165/65R14 = 22.4x6.5R14
185/55R14 = 22x7.3R14
185/60R14 = 22.7x7.3R14
195/55R14 = 22.4x7.7R14
205/50R14 = 22.1x8.1R14
205/55R14 = 22.9x8.1R14
225/50R14 = 22.9x8.9R14

15" Wheel Size

16" Wheel Size

125/70R16 = 22.9X4.9R16
175/50R16 = 22.9x6.9R16
195/40R16 = 22.1x7.7R16
195/45R16 = 22.9x7.7R16
205/40R16 = 22.5x8.1R16
215/35R16 = 21.9x8.5R16
215/40R16 = 22.8x8.5R16

23" Diameter Tire Calculator Chart

13" Wheel Size

165/80R13 = 23.4X6.5R13
185/70R13 = 23.2x7.3R13

14" Wheel Size

175/65R14 = 23x6.9R14
175/70R14 = 23.6x6.9R14
185/65R14 = 23.5x7.3R14
195/60R14 = 23.2x7.7R14
205/60R14 = 23.7x8.1R14

15" Wheel Size

16" Wheel Size

125/80R16 = 23.9X4.9R16
135/70R16 = 23.4X5.3R16
175/55R16 = 23.6x6.9R16
185/50R16 = 23.3X7.3R16
195/50R16 = 23.7x7.7R16
205/45R16 = 23.3x8.1R16
215/45R16 = 23.6x8.5R16

17" Wheel Size

125/70R17 = 23.9X4.9R17
195/40R17 = 23.1x7.7R17
195/45R17 = 23.9x7.7R17
205/40R17 = 23.5x8.1R17
215/35R17 = 22.9x8.5R17
215/40R17 = 23.8x8.5R17
225/35R17 = 23.2x8.9R17
245/35R17 = 23.8x9.6R17

18" Wheel Size

215/35R18 = 23.9x8.5R18

24" Diameter Tire Calculator Chart

13" Wheel Size

175/80R13 = 24x6.9R13
185/80R13 = 24.7x7.3R13
24.5X8R13
24.5X9R13

14" Wheel Size

185/70R14 = 24.2x7.3R14
185/75R14 = 24.9X7.3R14
195/65R14 = 24x7.7R14
195/70R14 = 24.7x7.7R14
215/60R14 = 24.2x8.5R14
225/60R14 = 24.6x8.9R14

15" Wheel Size

16" Wheel Size

17" Wheel Size

125/80R17 = 24.9X4.9R17
135/70R17 = 24.4X5.3R17
205/45R17 = 24.3x8.1R17
215/45R17 = 24.6x8.5R17
225/40R17 = 24.1x8.9R17
235/40R17 = 24.4x9.3R17
245/40R17 = 24.7x9.6R17
275/35R17 = 24.6x10.8R17

18" Wheel Size

125/70R18 = 24.9X4.9R18
205/40R18 = 24.5x8.1R18
215/40R18 = 24.8x8.5R18
225/35R18 = 24.2x8.9R18
235/35R18 = 24.5x9.3R18
245/35R18 = 24.8x9.6R18
285/30R18 = 24.7x11.2R18

19" Wheel Size

215/35R19 = 24.9x8.5R19
235/30R19 = 24.6x9.3R19
245/30R19 = 24.8x9.6R19
295/25R19 = 24.8X11.6R19

25" Diameter Tire Calculator Chart

14" Wheel Size

185R14 = 25.7x7.3R14
195/75R14 = 25.5x7.7R14
205/70R14 = 25.3x8.1R14
215/70R14 = 25.9x8.5R14
235/60R14 = 25.1x9.3R14
245/60R14 = 25.6x9.6R14

15" Wheel Size

16" Wheel Size

17" Wheel Size

18" Wheel Size

19" Wheel Size

20" Wheel Size

215/30R20 = 25.1X8.5R20
225/30R20 = 25.3x8.9R20
235/30R20 = 25.6x9.3R20
245/30R20 = 25.8x9.6R20
275/25R20 = 25.4X10.8R20
285/25R20 = 25.6x11.2R20
295/25R20 = 25.8x11.6R20

26" Diameter Tire Calculator Chart

14" Wheel Size

195R14 = 26.2x7.8R14
205/75R14 = 26.1x8.1R14
215/75R14 = 26.7x8.5R14
225/70R14 = 26.4x8.9R14
26X8.5R14

15" Wheel Size

16" Wheel Size

145/90R16 = 26.3X5.7R16
145/90R16 = 26.3X5.7R16
195/65R16 = 26X7.7R16
205/65R16 = 26.5x8.1R16
215/60R16 = 26.2x8.5R16
225/60R16 = 26.6x8.9R16
235/55R16 = 26.2x9.3R16
255/50R16 = 26x10R16
26X11.5R16

17" Wheel Size

18" Wheel Size

19" Wheel Size

20" Wheel Size

21" Wheel Size

245/30R21 = 26.8x9.6R21
295/25R21 = 26.8x11.6R21

27" Diameter Tire Calculator Chart

14" Wheel Size

205R14 = 27x8.2R14
27X8.5R14
27X9.5R14

15" Wheel Size

205/75R15 = 27.1x8.1R15
215/75R15 = 27.7x8.5R15
225/70R15 = 27.4x8.9R15
255/60R15 = 27x10R15
27X10.5R15
27X9.5R15
27.5X4.5R15
295/55R15 = 27.8X11.6R15
325/50R15 = 27.8x12.8R15
E78-15 = 27x6.5R15

16" Wheel Size

17" Wheel Size

18" Wheel Size

19" Wheel Size

20" Wheel Size

21" Wheel Size

245/35R21 = 27.8x9.6R21
255/30R21 = 27x10R21
265/30R21 = 27.3x10.4R21
275/30R21 = 27.5x10.8R21
285/30R21 = 27.7x11.2R21
305/25R21 = 27x12R21
325/25R21 = 27.4x12.8R21

22" Wheel Size

235/30R22 = 27.6x9.3R22
245/30R22 = 27.8x9.6R22
275/25R22 = 27.4x10.8R22
285/25R22 = 27.6x11.2R22
295/25R22 = 27.8x11.6R22

28" Diameter Tire Calculator Chart

15" Wheel Size

16" Wheel Size

195/80R16 = 28.3x7.7R16
205/75R16 = 28.1X8.1R16
205/80R16 = 28.9x8.1R16
215/75R16 = 28.7x8.5R16
225/70R16 = 28.4x8.9R16
235/65R16 = 28x9.3R16
255/60R16 = 28x10R16
28X11.5R16

17" Wheel Size

18" Wheel Size

19" Wheel Size

20" Wheel Size

21" Wheel Size

22" Wheel Size

255/30R22 = 28x10R22
265/30R22 = 28.3x10.4R22
275/30R22 = 28.5X10.8R22
285/30R22 = 28.7x11.2R22
305/25R22 = 28x12R22
315/25R22 = 28.2x12.4R22
335/25R22 = 28.6x13.2R22

23" Wheel Size

265/25R23 = 28.2X10.4R23

29" Diameter Tire Calculator Chart

15" Wheel Size

16" Wheel Size

225/75R16 = 29.3x8.9R16
235/70R16 = 29x9.3R16
235/75R16 = 29.9x9.3R16
245/70R16 = 29.5x9.6R16
255/65R16 = 29.1x10R16
275/60R16 = 29X10.8R16
285/60R16 = 29.5X11.2R16

16.5" Wheel Size

8.75R16.5 = 29.5x8.8R16.5

17" Wheel Size

175/90R17 = 29.4X6.9R17
225/70R17 = 29.4x8.9R17
235/65R17 = 29x9.3R17
245/65R17 = 29.5x9.6R17
255/60R17 = 29x10R17
265/60R17 = 29.5x10.4R17

18" Wheel Size

19" Wheel Size

235/55R19 = 29.2x9.3R19
245/55R19 = 29.6x9.6R19
255/50R19 = 29x10R19
265/50R19 = 29.4x10.4R19
275/50R19 = 29.8X10.8R19
285/45R19 = 29.1x11.2R19
295/45R19 = 29.5x11.6R19

20" Wheel Size

21" Wheel Size

245/45R21 = 29.7X9.6R21
255/40R21 = 29X10R21
265/40R21 = 29.3x10.4R21
275/40R21 = 29.7x10.8R21
295/35R21 = 29.1x11.6R21
305/35R21 = 29.4X12R21
315/35R21 = 29.7X12.4R21

22" Wheel Size

255/35R22 = 29x10R22
265/35R22 = 29.3x10.4R22
275/35R22 = 29.6X10.8R22
285/35R22 = 29.9x11.2R22
295/30R22 = 29x11.6R22
305/30R22 = 29.2x12R22
315/30R22 = 29.4X12.4R22

24" Wheel Size

275/25R24 = 29.4x10.8R24

30" Diameter Tire Calculator Chart

15" Wheel Size

255/75R15 = 30.1x10R15
265/75R15 = 30.6x10.4R15
295/65R15 = 30.1x11.6R15
30X10R15
30X10.5R15
30X11.5R15
30X12.5R15
30X13.5R15
30X7R15
30X9R15
30X9.5R15

16" Wheel Size

215/85R16 = 30.4x8.5R16
235/80R16 = 30.8x9.3R16
245/75R16 = 30.5x9.6R16
255/70R16 = 30.1x10R16
265/70R16 = 30.6x10.4R16
285/65R16 = 30.6X11.2R16
30X11.5R16

16.5" Wheel Size

9.5R16.5 = 30.6x9.5R16.5

17" Wheel Size

225/75R17 = 30.3x8.9R17
235/70R17 = 30x9.3R17
235/75R17 = 30.9x9.3R17
245/70R17 = 30.5x9.6R17
255/65R17 = 30.1x10R17
265/65R17 = 30.6x10.4R17
275/60R17 = 30x10.8R17
285/60R17 = 30.5X11.2R17

17.5" Wheel Size

215/75R17.5 = 30.2X8.5R17.5

18" Wheel Size

175/90R18 = 30.4X6.9R18
235/65R18 = 30x9.3R18
245/65R18 = 30.5x9.6R18
255/60R18 = 30x10R18
265/60R18 = 30.5x10.4R18
285/55R18 = 30.3x11.2R18

19" Wheel Size

165/90R19 = 30.7X6.5R19
175/80R19 = 30X6.9R19
255/55R19 = 30x10R19
265/55R19 = 30.5x10.4R19
275/55R19 = 30.9x10.8R19

20" Wheel Size

235/55R20 = 30.2x9.3R20
255/50R20 = 30x10R20
265/50R20 = 30.4x10.4R20
275/50R20 = 30.8x10.8R20
285/45R20 = 30.1X11.2R20
295/45R20 = 30.5x11.6R20
305/45R20 = 30.8x12R20

21" Wheel Size

265/45R21 = 30.4x10.4R21
275/45R21 = 30.7x10.8R21
285/40R21 = 30X11.2R21
295/40R21 = 30.3x11.6R21
315/40R21 = 30.9X12.4R21

22" Wheel Size

255/40R22 = 30X10R22
265/40R22 = 30.3x10.4R22
275/40R22 = 30.7x10.8R22
295/35R22 = 30.1X11.6R22
305/35R22 = 30.4X12R22
315/35R22 = 30.7X12.4R22

23" Wheel Size

285/35R23 = 30.9x11.2R23
325/30R23 = 30.7X12.8R23

24" Wheel Size

255/30R24 = 30x10R24
275/30R24 = 30.5x10.8R24
285/30R24 = 30.7x11.2R24

31" Diameter Tire Calculator Chart

15" Wheel Size

31X10.5R15
31X11R15
31X11.5R15
31X12.5R15
31X13R15
31X13.5R15
31X14.5R15
31X16.5R15
31X18R15
31X18.5R15
31X9.5R15

16" Wheel Size

225/85R16 = 31.1X8.9R16
235/85R16 = 31.7x9.3R16
265/75R16 = 31.6x10.4R16
275/70R16 = 31.2x10.8R16
285/70R16 = 31.7x11.2R16
31X10.5R16
31X11R16
31X11.5R16
31X12.5R16
7.5R16 = 31.8x8.7R16

17" Wheel Size

235/80R17 = 31.8x9.3R17
245/75R17 = 31.5x9.6R17
255/70R17 = 31.1x10R17
265/70R17 = 31.6x10.4R17
275/65R17 = 31.1x10.8R17
285/65R17 = 31.6x11.2R17
31X10.5R17

18" Wheel Size

235/70R18 = 31X9.3R18
255/65R18 = 31.1x10R18
265/65R18 = 31.6x10.4R18
275/60R18 = 31x10.8R18
285/60R18 = 31.5x11.2R18

19" Wheel Size

235/65R19 = 31X9.3R19
255/60R19 = 31x10R19

19.5" Wheel Size

225/70R19.5 = 31.9X8.9R19.5

20" Wheel Size

245/60R20 = 31.6x9.6R20
255/55R20 = 31x10R20
275/55R20 = 31.9x10.8R20
285/50R20 = 31.2x11.2R20
295/50R20 = 31.6x11.6R20
31X18R20

21" Wheel Size

255/50R21 = 31x10R21
275/50R21 = 31.8X10.8R21
285/45R21 = 31.1x11.2R21
325/40R21 = 31.2X12.8R21

22" Wheel Size

255/45R22 = 31X10R22
265/45R22 = 31.4X10.4R22
275/45R22 = 31.7x10.8R22
285/40R22 = 31x11.2R22
295/40R22 = 31.3x11.6R22
305/40R22 = 31.6x12R22
325/35R22 = 31X12.8R22

23" Wheel Size

275/40R23 = 31.7X10.8R23

24" Wheel Size

285/35R24 = 31.9x11.2R24
295/30R24 = 31X11.6R24

26" Wheel Size

275/25R26 = 31.4x10.8R26
295/25R26 = 31.8x11.6R26

32" Diameter Tire Calculator Chart

15" Wheel Size

32X10.5R15
32X11.5R15
32X14R15
32X16R15
32X17.5R15
32X18.5R15
32X9.5R15

16" Wheel Size

265/80R16 = 32.7X10.4R16
285/75R16 = 32.8x11.2R16
305/70R16 = 32.8x12R16
32X10R16
32X11.5R16
32X9R16

16.5" Wheel Size

32X12R16.5

17" Wheel Size

235/85R17 = 32.7X9.3R17
255/75R17 = 32.1x10R17
275/70R17 = 32.2x10.8R17
285/70R17 = 32.7x11.2R17
305/65R17 = 32.6x12R17
32X10.5R17
32X11.5R17

18" Wheel Size

255/70R18 = 32.1x10R18
265/70R18 = 32.6x10.4R18
275/65R18 = 32.1x10.8R18
285/65R18 = 32.6x11.2R18
305/60R18 = 32.4x12R18

20" Wheel Size

265/60R20 = 32.5x10.4R20
285/55R20 = 32.3x11.2R20
295/55R20 = 32.8X11.6R20
305/50R20 = 32x12R20
315/50R20 = 32.4x12.4R20
325/50R20 = 32.8x12.8R20

22" Wheel Size

275/50R22 = 32.8x10.8R22
285/45R22 = 32.1x11.2R22
305/45R22 = 32.8x12R22

23" Wheel Size

285/40R23 = 32x11.2R23
305/40R23 = 32.6x12R23
325/35R23 = 32X12.8R23

24" Wheel Size

295/35R24 = 32.1x11.6R24
305/35R24 = 32.4x12R24
315/35R24 = 32.7x12.4R24
405/25R24 = 32x15.9R24

33" Diameter Tire Calculator Chart

15" Wheel Size

33X10.5R15
33X11.5R15
33X12.5R15
33X13R15
33X13.5R15
33X14R15
33X14.5R15
33X15.5R15
33X16.5R15
33X19.5R15
33X21.5R15
33X9R15
33X9.5R15

16" Wheel Size

255/85R16 = 33.1x10R16
295/75R16 = 33.4x11.6R16
33X10.5R16
33X11.5R16
33X12.5R16
33X13R16
33X13.5R16
33X14R16
33X14.5R16
33X9.5R16
33.5X16.5R16

16.5" Wheel Size

33X11.5R16.5
33X12.5R16.5
33X14R16.5
33X14.5R16.5
33X15.5R16.5

17" Wheel Size

255/80R17 = 33.1x10R17
285/75R17 = 33.8x11.2R17
295/70R17 = 33.3x11.6R17
305/70R17 = 33.8x12R17
33X10.5R17
33X12.5R17
33X13R17
33X13.5R17
33X9.5R17

18" Wheel Size

275/70R18 = 33.2x10.8R18
285/70R18 = 33.7x11.2R18
295/65R18 = 33.1x11.6R18
305/65R18 = 33.6x12R18
325/60R18 = 33.4x12.8R18
33X10.5R18
33X11.5R18
33X12.5R18
33X13R18
33X13.5R18

19.5" Wheel Size

245/70R19.5 = 33X9.6R19.5
8R19.5 = 33.6x8R19.5

20" Wheel Size

275/60R20 = 33x10.8R20
285/60R20 = 33.5x11.2R20
295/60R20 = 33.9X11.6R20
305/55R20 = 33.2x12R20
33X11.5R20
33X12R20
33X12.5R20
33X13.5R20

22" Wheel Size

285/50R22 = 33.2x11.2R22
33X12.5R22
33X14.5R22
355/40R22 = 33.2X14R22

24" Wheel Size

285/40R24 = 33x11.2R24
295/40R24 = 33.3x11.6R24

26" Wheel Size

295/30R26 = 33x11.6R26
305/30R26 = 33.2x12R26

28" Wheel Size

295/25R28 = 33.8x11.6R28

34" Diameter Tire Calculator Chart

15" Wheel Size

34X10.5R15
34X12.5R15
34X9.5R15

16" Wheel Size

315/75R16 = 34.6x12.4R16
34X10.5R16
34X12.5R16
34X13.5R16
34X9R16
34.5X17R16

17" Wheel Size

275/80R17 = 34.3X10.8R17
315/70R17 = 34.4x12.4R17
325/70R17 = 34.9x12.8R17
34X10.5R17

18" Wheel Size

285/75R18 = 34.8x11.2R18
295/70R18 = 34.3X11.6R18
305/70R18 = 34.8x12R18
325/65R18 = 34.6x12.8R18
34X12.5R18

20" Wheel Size

275/65R20 = 34.1x10.8R20
285/65R20 = 34.6x11.2R20
305/60R20 = 34.4x12R20
315/60R20 = 34.9x12.4R20
355/50R20 = 34X14R20

22" Wheel Size

285/55R22 = 34.3X11.2R22
295/55R22 = 34.8X11.6R22
305/50R22 = 34x12R22
325/50R22 = 34.8x12.8R22

24" Wheel Size

385/35R24 = 34.6x15.2R24

35" Diameter Tire Calculator Chart

15" Wheel Size

35X10.5R15
35X12.5R15
35X13.5R15
35X14.5R15
35X15R15
35X15.5R15
35X16R15

16" Wheel Size

35X10.5R16
35X12.5R16
35X14.5R16
35X15R16
35X16R16
375/65R16 = 35.2x14.8R16

16.5" Wheel Size

35X12.5R16.5
35X14.5R16.5
35X15R16.5
35X15.5R16.5
35X16R16.5
35X9.5R16.5

17" Wheel Size

35X10.5R17
35X11.5R17
35X12.5R17
35X13.5R17
35X14.5R17

18" Wheel Size

315/70R18 = 35.4x12.4R18
35X11.5R18
35X12.5R18
35X13R18
35X13.5R18
35X14.5R18

20" Wheel Size

295/65R20 = 35.1X11.6R20
325/60R20 = 35.4x12.8R20
35X11.5R20
35X12.5R20
35X13R20
35X13.5R20
35X14.5R20

22" Wheel Size

35X12.5R22
35X14.5R22
35X15.5R22
375/45R22 = 35.3X14.8R22

24" Wheel Size

325/45R24 = 35.5x12.8R24
35X12.5R24
35X13.5R24
375/40R24 = 35.8X14.8R24

26" Wheel Size

315/40R26 = 35.9x12.4R26

36" Diameter Tire Calculator Chart

15" Wheel Size

36X12.5R15
36X13.5R15
36X14.5R15

16" Wheel Size

325/80R16 = 36.5x12.8R16
345/75R16 = 36.4x13.6R16
36X12.5R16
36X13R16
36X13.5R16
36X14.5R16

16.5" Wheel Size

36X12.5R16.5
36X13.5R16.5
36X14.5R16.5
36X16R16.5

17" Wheel Size

355/70R17 = 36.6x14R17
36X12.5R17
36X13.5R17

18" Wheel Size

355/65R18 = 36.2x14R18
36X13.5R18

20" Wheel Size

355/60R20 = 36.8x14R20
36X13.5R20
36X15.5R20

22" Wheel Size

325/55R22 = 36.1x12.8R22
335/55R22 = 36.5X13.2R22

24" Wheel Size

315/50R24 = 36.4X12.4R24

37" Diameter Tire Calculator Chart

15" Wheel Size

37X12.5R15
37X13R15
37X13.5R15
37X14R15
37X14.5R15

16" Wheel Size

365/75R16 = 37.6x14.4R16
37X12.5R16
37X13R16
37X13.5R16
37X14R16
37X14.5R16
385/70R16 = 37.2x15.2R16
395/70R16 = 37.8x15.6R16

16.5" Wheel Size

37X12.5R16.5
37X13R16.5
37X14R16.5

17" Wheel Size

37X12.5R17
37X13R17
37X13.5R17
37X14R17

18" Wheel Size

37X11.5R18
37X12.5R18
37X13.5R18

20" Wheel Size

37X11.5R20
37X12.5R20
37X13.5R20
37X14.5R20

22" Wheel Size

325/60R22 = 37.4x12.8R22
37X12.5R22
37X13.5R22

24" Wheel Size

37X13.5R24
37X14.5R24

28" Wheel Size

325/35R28 = 37x12.8R28

30" Wheel Size

315/30R30 = 37.4x12.4R30

38" Diameter Tire Calculator Chart

15" Wheel Size

38X12.5R15
38X13R15
38X14.5R15
38X15.5R15
38.5X11R15
38.5X13.5R15
38.5X14.5R15
38.5X15R15
38.5X16R15

16" Wheel Size

38X13R16
38X14.5R16
38X15.5R16
38.5X11R16
38.5X13.5R16
38.5X14.5R16
38.5X15R16

16.5" Wheel Size

38X11R16.5
38X12.5R16.5
38X15.5R16.5
38.5X11R16.5
38.5X13.5R16.5
38.5X14.5R16.5
38.5X15R16.5
38.5X16R16.5

17" Wheel Size

38X13.5R17
38X14.5R17
38X15.5R17
38.5X13.5R17
38.5X14.5R17

18" Wheel Size

38X13.5R18
38X14.5R18
38X15R18
38X15.5R18
38.5X14.5R18

20" Wheel Size

38X13.5R20
38X14.5R20
38X15.5R20
38.5X13.5R20
38.5X14.5R20

22" Wheel Size

355/60R22 = 38.8x14R22
38X13.5R22
38X15.5R22

24" Wheel Size

38X13.5R24
38X14R24
38X15.5R24

39" Diameter Tire Calculator Chart

15" Wheel Size

39X13.5R15
39.5X13.5R15
39.5X15R15
39.5X18R15

16" Wheel Size

39X13.5R16
39.5X13.5R16
39.5X15R16

16.5" Wheel Size

39X13.5R16.5
39.5X13.5R16.5
39.5X15R16.5
39.5X18R16.5

17" Wheel Size

39X13.5R17
39.5X13.5R17
39.5X15R17

20" Wheel Size

39X13.5R20
39.5X13.5R20
39.5X15R20

40" Diameter Tire Calculator Chart

17" Wheel Size

40X13.5R17
40X14.5R17
40X16R17

18" Wheel Size

40X13.5R18
40X14.5R18

20" Wheel Size

40X13.5R20
40X14.5R20
40X15.5R20

22" Wheel Size

40X14.5R22
40X15.5R22

24" Wheel Size

40X13.5R24
40X14.5R24
40X15.5R24

26" Wheel Size

40X13.5R26
40X15.5R26

41-54" Diameter Tire Calculator Chart

42X14R15
42X15R15
42.5X13.5R15

42X14R16
42X15R16
42.5X13.5R16

42X14R16.5
42X15R16.5
42.5X13.5R16.5

42X14R17
42X14.5R17
42X15R17
42.5X13.5R17

42X14.5R20
42X15R20
42.5X13.5R20

44X18.5R15
44X19.5R15
44X21R15

44X18.5R16.5
44X18.5R16.5
44X19.5R16.5
44X21R16.5

44X19.5R20
44X19.5R20
44X21R20

how to find tire size

Source: https://tiresize.com/calculator/

Posted by: zimmerandreas.blogspot.com