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Tire size chart in inches and millimeters

Nominal dimensions for 99 source-backed sizes, grouped by rim diameter and then by overall height. Each size links to its own page with similar sizes and reviewed comparisons. This is a selected reference catalog, not a list of every tire sold or a vehicle-fitment chart.

Already know both sizes? Use the tire size calculator. You can also browse all reviewed comparisons or learn how to read a tire size.

Tire sizes for 14-inch rims

Nominal dimensions of catalog tire sizes for 14-inch rims
Size	Inch notation	Overall diameter	Section width	Sidewall	Revs per mile
185/70R14	24.2x7.3R14	24.20 in	7.28 in	5.10 in / 129.5 mm	834
205/75R14	26.1x8.1R14	26.11 in	8.07 in	6.05 in / 153.8 mm	773

Tire sizes for 15-inch rims

Nominal dimensions of catalog tire sizes for 15-inch rims
Size	Inch notation	Overall diameter	Section width	Sidewall	Revs per mile
185/65R15	24.5x7.3R15	24.47 in	7.28 in	4.73 in / 120.3 mm	824
195/60R15	24.2x7.7R15	24.21 in	7.68 in	4.61 in / 117.0 mm	833
195/65R15	25.0x7.7R15	24.98 in	7.68 in	4.99 in / 126.8 mm	807
205/60R15	24.7x8.1R15	24.69 in	8.07 in	4.84 in / 123.0 mm	817
205/65R15	25.5x8.1R15	25.49 in	8.07 in	5.25 in / 133.3 mm	791
205/70R15	26.3x8.1R15	26.30 in	8.07 in	5.65 in / 143.5 mm	767
205/75R15	27.1x8.1R15	27.11 in	8.07 in	6.05 in / 153.8 mm	744
215/60R15	25.2x8.5R15	25.16 in	8.46 in	5.08 in / 129.0 mm	802
215/65R15	26.0x8.5R15	26.00 in	8.46 in	5.50 in / 139.8 mm	776
215/70R15	26.9x8.5R15	26.85 in	8.46 in	5.93 in / 150.5 mm	751
215/75R15	27.7x8.5R15	27.70 in	8.46 in	6.35 in / 161.3 mm	728
225/70R15	27.4x8.9R15	27.40 in	8.86 in	6.20 in / 157.5 mm	736
225/75R15	28.3x8.9R15	28.29 in	8.86 in	6.64 in / 168.8 mm	713
235/70R15	28.0x9.3R15	27.95 in	9.25 in	6.48 in / 164.5 mm	722
235/75R15	28.9x9.3R15	28.88 in	9.25 in	6.94 in / 176.3 mm	698
255/70R15	29.1x10.0R15	29.06 in	10.04 in	7.03 in / 178.5 mm	694
265/75R15	30.7x10.4R15	30.65 in	10.43 in	7.82 in / 198.8 mm	658

Tire sizes for 16-inch rims

Nominal dimensions of catalog tire sizes for 16-inch rims
Size	Inch notation	Overall diameter	Section width	Sidewall	Revs per mile
195/55R16	24.4x7.7R16	24.44 in	7.68 in	4.22 in / 107.3 mm	825
205/50R16	24.1x8.1R16	24.07 in	8.07 in	4.04 in / 102.5 mm	838
205/55R16	24.9x8.1R16	24.88 in	8.07 in	4.44 in / 112.8 mm	811
205/60R16	25.7x8.1R16	25.69 in	8.07 in	4.84 in / 123.0 mm	785
215/55R16	25.3x8.5R16	25.31 in	8.46 in	4.66 in / 118.3 mm	797
215/60R16	26.2x8.5R16	26.16 in	8.46 in	5.08 in / 129.0 mm	771
215/65R16	27.0x8.5R16	27.00 in	8.46 in	5.50 in / 139.8 mm	747
215/70R16	27.9x8.5R16	27.85 in	8.46 in	5.93 in / 150.5 mm	724
215/85R16	30.4x8.5R16	30.39 in	8.46 in	7.19 in / 182.8 mm	664
225/50R16	24.9x8.9R16	24.86 in	8.86 in	4.43 in / 112.5 mm	811
225/55R16	25.7x8.9R16	25.74 in	8.86 in	4.87 in / 123.8 mm	783
225/60R16	26.6x8.9R16	26.63 in	8.86 in	5.31 in / 135.0 mm	757
225/65R16	27.5x8.9R16	27.52 in	8.86 in	5.76 in / 146.3 mm	733
225/70R16	28.4x8.9R16	28.40 in	8.86 in	6.20 in / 157.5 mm	710
225/75R16	29.3x8.9R16	29.29 in	8.86 in	6.64 in / 168.8 mm	689
235/60R16	27.1x9.3R16	27.10 in	9.25 in	5.55 in / 141.0 mm	744
235/65R16	28.0x9.3R16	28.03 in	9.25 in	6.01 in / 152.8 mm	720
235/70R16	29.0x9.3R16	28.95 in	9.25 in	6.48 in / 164.5 mm	697
235/75R16	29.9x9.3R16	29.88 in	9.25 in	6.94 in / 176.3 mm	675
235/80R16	30.8x9.3R16	30.80 in	9.25 in	7.40 in / 188.0 mm	655
235/85R16	31.7x9.3R16	31.73 in	9.25 in	7.86 in / 199.8 mm	636
245/70R16	29.5x9.7R16	29.50 in	9.65 in	6.75 in / 171.5 mm	684
245/75R16	30.5x9.7R16	30.47 in	9.65 in	7.23 in / 183.8 mm	662
255/65R16	29.1x10.0R16	29.05 in	10.04 in	6.53 in / 165.8 mm	694
255/70R16	30.1x10.0R16	30.06 in	10.04 in	7.03 in / 178.5 mm	671
255/75R16	31.1x10.0R16	31.06 in	10.04 in	7.53 in / 191.3 mm	649
265/70R16	30.6x10.4R16	30.61 in	10.43 in	7.30 in / 185.5 mm	659
265/75R16	31.7x10.4R16	31.65 in	10.43 in	7.82 in / 198.8 mm	637
275/70R16	31.2x10.8R16	31.16 in	10.83 in	7.58 in / 192.5 mm	647

Tire sizes for 17-inch rims

Nominal dimensions of catalog tire sizes for 17-inch rims
Size	Inch notation	Overall diameter	Section width	Sidewall	Revs per mile
205/50R17	25.1x8.1R17	25.07 in	8.07 in	4.04 in / 102.5 mm	804
215/45R17	24.6x8.5R17	24.62 in	8.46 in	3.81 in / 96.8 mm	819
215/50R17	25.5x8.5R17	25.46 in	8.46 in	4.23 in / 107.5 mm	792
215/55R17	26.3x8.5R17	26.31 in	8.46 in	4.66 in / 118.3 mm	767
215/65R17	28.0x8.5R17	28.00 in	8.46 in	5.50 in / 139.8 mm	720
225/45R17	25.0x8.9R17	24.97 in	8.86 in	3.99 in / 101.3 mm	808
225/50R17	25.9x8.9R17	25.86 in	8.86 in	4.43 in / 112.5 mm	780
225/55R17	26.7x8.9R17	26.74 in	8.86 in	4.87 in / 123.8 mm	754
225/60R17	27.6x8.9R17	27.63 in	8.86 in	5.31 in / 135.0 mm	730
225/65R17	28.5x8.9R17	28.52 in	8.86 in	5.76 in / 146.3 mm	707
235/45R17	25.3x9.3R17	25.33 in	9.25 in	4.16 in / 105.8 mm	796
235/55R17	27.2x9.3R17	27.18 in	9.25 in	5.09 in / 129.3 mm	742
235/65R17	29.0x9.3R17	29.03 in	9.25 in	6.01 in / 152.8 mm	695
235/80R17	31.8x9.3R17	31.80 in	9.25 in	7.40 in / 188.0 mm	634
245/45R17	25.7x9.7R17	25.68 in	9.65 in	4.34 in / 110.3 mm	785
245/65R17	29.5x9.7R17	29.54 in	9.65 in	6.27 in / 159.3 mm	683
245/70R17	30.5x9.7R17	30.50 in	9.65 in	6.75 in / 171.5 mm	661
245/75R17	31.5x9.7R17	31.47 in	9.65 in	7.23 in / 183.8 mm	641
255/65R17	30.1x10.0R17	30.05 in	10.04 in	6.53 in / 165.8 mm	671
255/70R17	31.1x10.0R17	31.06 in	10.04 in	7.03 in / 178.5 mm	649
255/75R17	32.1x10.0R17	32.06 in	10.04 in	7.53 in / 191.3 mm	629
265/65R17	30.6x10.4R17	30.56 in	10.43 in	6.78 in / 172.3 mm	660
265/70R17	31.6x10.4R17	31.61 in	10.43 in	7.30 in / 185.5 mm	638
275/60R17	30.0x10.8R17	29.99 in	10.83 in	6.50 in / 165.0 mm	672

Tire sizes for 18-inch rims

Nominal dimensions of catalog tire sizes for 18-inch rims
Size	Inch notation	Overall diameter	Section width	Sidewall	Revs per mile
225/40R18	25.1x8.9R18	25.09 in	8.86 in	3.54 in / 90.0 mm	804
225/45R18	26.0x8.9R18	25.97 in	8.86 in	3.99 in / 101.3 mm	777
225/50R18	26.9x8.9R18	26.86 in	8.86 in	4.43 in / 112.5 mm	751
235/50R18	27.3x9.3R18	27.25 in	9.25 in	4.63 in / 117.5 mm	740
235/60R18	29.1x9.3R18	29.10 in	9.25 in	5.55 in / 141.0 mm	693
245/40R18	25.7x9.7R18	25.72 in	9.65 in	3.86 in / 98.0 mm	784
245/45R18	26.7x9.7R18	26.68 in	9.65 in	4.34 in / 110.3 mm	756
255/65R18	31.1x10.0R18	31.05 in	10.04 in	6.53 in / 165.8 mm	650
255/70R18	32.1x10.0R18	32.06 in	10.04 in	7.03 in / 178.5 mm	629
265/60R18	30.5x10.4R18	30.52 in	10.43 in	6.26 in / 159.0 mm	661
265/65R18	31.6x10.4R18	31.56 in	10.43 in	6.78 in / 172.3 mm	639
275/65R18	32.1x10.8R18	32.07 in	10.83 in	7.04 in / 178.8 mm	629

Tire sizes for 19-inch rims

Nominal dimensions of catalog tire sizes for 19-inch rims
Size	Inch notation	Overall diameter	Section width	Sidewall	Revs per mile
245/40R19	26.7x9.7R19	26.72 in	9.65 in	3.86 in / 98.0 mm	755

Tire sizes for 20-inch rims

Nominal dimensions of catalog tire sizes for 20-inch rims
Size	Inch notation	Overall diameter	Section width	Sidewall	Revs per mile
245/45R20	28.7x9.7R20	28.68 in	9.65 in	4.34 in / 110.3 mm	703
255/45R20	29.0x10.0R20	29.04 in	10.04 in	4.52 in / 114.8 mm	695
275/40R20	28.7x10.8R20	28.66 in	10.83 in	4.33 in / 110.0 mm	704
265/40R20	28.4x10.4R20	28.35 in	10.43 in	4.17 in / 106.0 mm	711
285/40R20	29.0x11.2R20	28.98 in	11.22 in	4.49 in / 114.0 mm	696

Tire sizes for 21-inch rims

Nominal dimensions of catalog tire sizes for 21-inch rims
Size	Inch notation	Overall diameter	Section width	Sidewall	Revs per mile
245/40R21	28.7x9.7R21	28.72 in	9.65 in	3.86 in / 98.0 mm	702
255/40R21	29.0x10.0R21	29.03 in	10.04 in	4.02 in / 102.0 mm	695
265/35R21	28.3x10.4R21	28.30 in	10.43 in	3.65 in / 92.8 mm	713
275/35R21	28.6x10.8R21	28.58 in	10.83 in	3.79 in / 96.3 mm	706
285/35R21	28.9x11.2R21	28.85 in	11.22 in	3.93 in / 99.8 mm	699

Tire sizes for 22-inch rims

Nominal dimensions of catalog tire sizes for 22-inch rims
Size	Inch notation	Overall diameter	Section width	Sidewall	Revs per mile
265/35R22	29.3x10.4R22	29.30 in	10.43 in	3.65 in / 92.8 mm	688
255/35R22	29.0x10.0R22	29.03 in	10.04 in	3.51 in / 89.3 mm	695
275/35R22	29.6x10.8R22	29.58 in	10.83 in	3.79 in / 96.3 mm	682
285/30R22	28.7x11.2R22	28.73 in	11.22 in	3.37 in / 85.5 mm	702

Sizes by overall diameter

Tires are often described by height, such as a 32-inch tire. Each group lists catalog sizes whose nominal overall diameter rounds to that whole inch, on any rim size. Mounted height varies by tire model.

About 24 inches tall

23.50 to 24.49 in overall diameter

205/50R16 24.07 in, 16-inch rim
185/70R14 24.20 in, 14-inch rim
195/60R15 24.21 in, 15-inch rim
195/55R16 24.44 in, 16-inch rim
185/65R15 24.47 in, 15-inch rim

About 25 inches tall

24.50 to 25.49 in overall diameter

215/45R17 24.62 in, 17-inch rim
205/60R15 24.69 in, 15-inch rim
225/50R16 24.86 in, 16-inch rim
205/55R16 24.88 in, 16-inch rim
225/45R17 24.97 in, 17-inch rim
195/65R15 24.98 in, 15-inch rim
205/50R17 25.07 in, 17-inch rim
225/40R18 25.09 in, 18-inch rim
215/60R15 25.16 in, 15-inch rim
215/55R16 25.31 in, 16-inch rim
235/45R17 25.33 in, 17-inch rim
215/50R17 25.46 in, 17-inch rim
205/65R15 25.49 in, 15-inch rim

About 26 inches tall

25.50 to 26.49 in overall diameter

245/45R17 25.68 in, 17-inch rim
205/60R16 25.69 in, 16-inch rim
245/40R18 25.72 in, 18-inch rim
225/55R16 25.74 in, 16-inch rim
225/50R17 25.86 in, 17-inch rim
225/45R18 25.97 in, 18-inch rim
215/65R15 26.00 in, 15-inch rim
205/75R14 26.11 in, 14-inch rim
215/60R16 26.16 in, 16-inch rim
205/70R15 26.30 in, 15-inch rim
215/55R17 26.31 in, 17-inch rim

About 27 inches tall

26.50 to 27.49 in overall diameter

225/60R16 26.63 in, 16-inch rim
245/45R18 26.68 in, 18-inch rim
245/40R19 26.72 in, 19-inch rim
225/55R17 26.74 in, 17-inch rim
215/70R15 26.85 in, 15-inch rim
225/50R18 26.86 in, 18-inch rim
215/65R16 27.00 in, 16-inch rim
235/60R16 27.10 in, 16-inch rim
205/75R15 27.11 in, 15-inch rim
235/55R17 27.18 in, 17-inch rim
235/50R18 27.25 in, 18-inch rim
225/70R15 27.40 in, 15-inch rim

About 28 inches tall

27.50 to 28.49 in overall diameter

225/65R16 27.52 in, 16-inch rim
225/60R17 27.63 in, 17-inch rim
215/75R15 27.70 in, 15-inch rim
215/70R16 27.85 in, 16-inch rim
235/70R15 27.95 in, 15-inch rim
215/65R17 28.00 in, 17-inch rim
235/65R16 28.03 in, 16-inch rim
225/75R15 28.29 in, 15-inch rim
265/35R21 28.30 in, 21-inch rim
265/40R20 28.35 in, 20-inch rim
225/70R16 28.40 in, 16-inch rim

About 29 inches tall

28.50 to 29.49 in overall diameter

225/65R17 28.52 in, 17-inch rim
275/35R21 28.58 in, 21-inch rim
275/40R20 28.66 in, 20-inch rim
245/45R20 28.68 in, 20-inch rim
245/40R21 28.72 in, 21-inch rim
285/30R22 28.73 in, 22-inch rim
285/35R21 28.85 in, 21-inch rim
235/75R15 28.88 in, 15-inch rim
235/70R16 28.95 in, 16-inch rim
285/40R20 28.98 in, 20-inch rim
235/65R17 29.03 in, 17-inch rim
255/35R22 29.03 in, 22-inch rim
255/40R21 29.03 in, 21-inch rim
255/45R20 29.04 in, 20-inch rim
255/65R16 29.05 in, 16-inch rim
255/70R15 29.06 in, 15-inch rim
235/60R18 29.10 in, 18-inch rim
225/75R16 29.29 in, 16-inch rim
265/35R22 29.30 in, 22-inch rim

About 30 inches tall

29.50 to 30.49 in overall diameter

245/70R16 29.50 in, 16-inch rim
245/65R17 29.54 in, 17-inch rim
275/35R22 29.58 in, 22-inch rim
235/75R16 29.88 in, 16-inch rim
275/60R17 29.99 in, 17-inch rim
255/65R17 30.05 in, 17-inch rim
255/70R16 30.06 in, 16-inch rim
215/85R16 30.39 in, 16-inch rim
245/75R16 30.47 in, 16-inch rim

About 31 inches tall

30.50 to 31.49 in overall diameter

245/70R17 30.50 in, 17-inch rim
265/60R18 30.52 in, 18-inch rim
265/65R17 30.56 in, 17-inch rim
265/70R16 30.61 in, 16-inch rim
265/75R15 30.65 in, 15-inch rim
235/80R16 30.80 in, 16-inch rim
255/65R18 31.05 in, 18-inch rim
255/70R17 31.06 in, 17-inch rim
255/75R16 31.06 in, 16-inch rim
275/70R16 31.16 in, 16-inch rim
245/75R17 31.47 in, 17-inch rim

About 32 inches tall

31.50 to 32.49 in overall diameter

265/65R18 31.56 in, 18-inch rim
265/70R17 31.61 in, 17-inch rim
265/75R16 31.65 in, 16-inch rim
235/85R16 31.73 in, 16-inch rim
235/80R17 31.80 in, 17-inch rim
255/70R18 32.06 in, 18-inch rim
255/75R17 32.06 in, 17-inch rim
275/65R18 32.07 in, 18-inch rim

What the chart establishes

Dimensions are calculated from the size marking. Inch notation is rounded to one decimal and is approximate. Exact mounted dimensions vary by tire model and measuring rim. Historical NHTSA appearances and current manufacturer listings are attributed on each size page; neither establishes stock availability or vehicle compatibility. See the calculation and evidence method.