| Code | Difference | = 50mph | 1000miles = | Diameter | Wall,in | Wall,mm |
|---|---|---|---|---|---|---|
| 245/50-13 | 0.00 % | 50.00 | 1,000.00 | 22.65 | 4.82 | 122.50 |
| 175/70-13 | 0.00 % | 50.00 | 1,000.00 | 22.65 | 4.82 | 122.50 |
| 205/60-13 | +0.17 % | 50.09 | 998.26 | 22.69 | 4.84 | 123.00 |
| 305/40-13 | -0.17 % | 49.91 | 1,001.74 | 22.61 | 4.80 | 122.00 |
| 145/85-13 | +0.26 % | 50.13 | 997.39 | 22.70 | 4.85 | 123.25 |
| 275/45-13 | +0.43 % | 50.22 | 995.65 | 22.74 | 4.87 | 123.75 |
| 225/55-13 | +0.43 % | 50.22 | 995.65 | 22.74 | 4.87 | 123.75 |
| 165/75-13 | +0.43 % | 50.22 | 995.65 | 22.74 | 4.87 | 123.75 |
| 155/80-13 | +0.52 % | 50.26 | 994.78 | 22.76 | 4.88 | 124.00 |
| 185/65-13 | -0.78 % | 49.61 | 1,007.82 | 22.47 | 4.73 | 120.25 |
| 265/45-13 | -1.13 % | 49.43 | 1,011.30 | 22.39 | 4.69 | 119.25 |
| 315/40-13 | +1.22 % | 50.61 | 987.83 | 22.92 | 4.96 | 126.00 |
| 195/65-13 | +1.48 % | 50.74 | 985.22 | 22.98 | 4.99 | 126.75 |
| 215/55-13 | -1.48 % | 49.26 | 1,014.78 | 22.31 | 4.66 | 118.25 |
| 295/40-13 | -1.56 % | 49.22 | 1,015.65 | 22.29 | 4.65 | 118.00 |
| 255/50-13 | +1.74 % | 50.87 | 982.61 | 23.04 | 5.02 | 127.50 |
| 235/50-13 | -1.74 % | 49.13 | 1,017.39 | 22.25 | 4.63 | 117.50 |
| 335/35-13 | -1.83 % | 49.09 | 1,018.25 | 22.23 | 4.62 | 117.25 |
| 195/60-13 | -1.91 % | 49.04 | 1,019.12 | 22.21 | 4.61 | 117.00 |
| 285/45-13 | +2.00 % | 51.00 | 980.01 | 23.10 | 5.05 | 128.25 |
| Ratio: | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Wheel Size 12
|
|||||||||||||
|
Wheel Size 13
|
|||||||||||||
| 145 |
145/25-13
d=15.85
w=1.43
-29.99%
|
145/30-13
d=16.43
w=1.71
-27.47%
|
145/35-13
d=17.00
w=2.00
-24.95%
|
145/40-13
d=17.57
w=2.28
-22.43%
|
145/45-13
d=18.14
w=2.57
-19.91%
|
145/50-13
d=18.71
w=2.85
-17.39%
|
145/55-13
d=19.28
w=3.14
-14.86%
|
145/60-13
d=19.85
w=3.43
-12.34%
|
145/65-13
d=20.42
w=3.71
-9.82%
|
145/70-13
d=20.99
w=4.00
-7.30%
|
145/75-13
d=21.56
w=4.28
-4.78%
|
145/80-13
d=22.13
w=4.57
-2.26%
|
145/85-13
d=22.70
w=4.85
+0.26%
|
| 155 |
155/25-13
d=16.05
w=1.53
-29.12%
|
155/30-13
d=16.66
w=1.83
-26.43%
|
155/35-13
d=17.27
w=2.14
-23.73%
|
155/40-13
d=17.88
w=2.44
-21.04%
|
155/45-13
d=18.49
w=2.75
-18.34%
|
155/50-13
d=19.10
w=3.05
-15.65%
|
155/55-13
d=19.71
w=3.36
-12.95%
|
155/60-13
d=20.32
w=3.66
-10.26%
|
155/65-13
d=20.93
w=3.97
-7.56%
|
155/70-13
d=21.54
w=4.27
-4.87%
|
155/75-13
d=22.15
w=4.58
-2.17%
|
155/80-13
d=22.76
w=4.88
+0.52%
|
155/85-13
d=23.37
w=5.19
+3.22%
|
| 165 |
165/25-13
d=16.25
w=1.62
-28.25%
|
165/30-13
d=16.90
w=1.95
-25.38%
|
165/35-13
d=17.55
w=2.27
-22.51%
|
165/40-13
d=18.20
w=2.60
-19.65%
|
165/45-13
d=18.85
w=2.92
-16.78%
|
165/50-13
d=19.50
w=3.25
-13.91%
|
165/55-13
d=20.15
w=3.57
-11.04%
|
165/60-13
d=20.80
w=3.90
-8.17%
|
165/65-13
d=21.44
w=4.22
-5.30%
|
165/70-13
d=22.09
w=4.55
-2.43%
|
165/75-13
d=22.74
w=4.87
+0.43%
|
165/80-13
d=23.39
w=5.20
+3.30%
|
165/85-13
d=24.04
w=5.52
+6.17%
|
| 175 |
175/25-13
d=16.44
w=1.72
-27.38%
|
175/30-13
d=17.13
w=2.07
-24.34%
|
175/35-13
d=17.82
w=2.41
-21.30%
|
175/40-13
d=18.51
w=2.76
-18.25%
|
175/45-13
d=19.20
w=3.10
-15.21%
|
175/50-13
d=19.89
w=3.44
-12.17%
|
175/55-13
d=20.58
w=3.79
-9.13%
|
175/60-13
d=21.27
w=4.13
-6.08%
|
175/65-13
d=21.96
w=4.48
-3.04%
|
175/70-13
d=22.65
w=4.82
0.00%
|
175/75-13
d=23.33
w=5.17
+3.04%
|
175/80-13
d=24.02
w=5.51
+6.08%
|
175/85-13
d=24.71
w=5.86
+9.13%
|
| 185 |
185/25-13
d=16.64
w=1.82
-26.51%
|
185/30-13
d=17.37
w=2.19
-23.30%
|
185/35-13
d=18.10
w=2.55
-20.08%
|
185/40-13
d=18.83
w=2.91
-16.86%
|
185/45-13
d=19.56
w=3.28
-13.65%
|
185/50-13
d=20.28
w=3.64
-10.43%
|
185/55-13
d=21.01
w=4.01
-7.21%
|
185/60-13
d=21.74
w=4.37
-4.00%
|
185/65-13
d=22.47
w=4.73
-0.78%
|
185/70-13
d=23.20
w=5.10
+2.43%
|
185/75-13
d=23.93
w=5.46
+5.65%
|
185/80-13
d=24.65
w=5.83
+8.87%
|
185/85-13
d=25.38
w=6.19
+12.08%
|
| 195 |
195/25-13
d=16.84
w=1.92
-25.64%
|
195/30-13
d=17.61
w=2.30
-22.25%
|
195/35-13
d=18.37
w=2.69
-18.86%
|
195/40-13
d=19.14
w=3.07
-15.47%
|
195/45-13
d=19.91
w=3.45
-12.08%
|
195/50-13
d=20.68
w=3.84
-8.69%
|
195/55-13
d=21.44
w=4.22
-5.30%
|
195/60-13
d=22.21
w=4.61
-1.91%
|
195/65-13
d=22.98
w=4.99
+1.48%
|
195/70-13
d=23.75
w=5.37
+4.87%
|
195/75-13
d=24.52
w=5.76
+8.26%
|
195/80-13
d=25.28
w=6.14
+11.65%
|
195/85-13
d=26.05
w=6.53
+15.04%
|
| 205 |
205/25-13
d=17.04
w=2.02
-24.77%
|
205/30-13
d=17.84
w=2.42
-21.21%
|
205/35-13
d=18.65
w=2.82
-17.65%
|
205/40-13
d=19.46
w=3.23
-14.08%
|
205/45-13
d=20.26
w=3.63
-10.52%
|
205/50-13
d=21.07
w=4.04
-6.95%
|
205/55-13
d=21.88
w=4.44
-3.39%
|
205/60-13
d=22.69
w=4.84
+0.17%
|
205/65-13
d=23.49
w=5.25
+3.74%
|
205/70-13
d=24.30
w=5.65
+7.30%
|
205/75-13
d=25.11
w=6.05
+10.87%
|
205/80-13
d=25.91
w=6.46
+14.43%
|
205/85-13
d=26.72
w=6.86
+17.99%
|
| 215 |
215/25-13
d=17.23
w=2.12
-23.90%
|
215/30-13
d=18.08
w=2.54
-20.17%
|
215/35-13
d=18.93
w=2.96
-16.43%
|
215/40-13
d=19.77
w=3.39
-12.69%
|
215/45-13
d=20.62
w=3.81
-8.95%
|
215/50-13
d=21.46
w=4.23
-5.22%
|
215/55-13
d=22.31
w=4.66
-1.48%
|
215/60-13
d=23.16
w=5.08
+2.26%
|
215/65-13
d=24.00
w=5.50
+6.00%
|
215/70-13
d=24.85
w=5.93
+9.74%
|
215/75-13
d=25.70
w=6.35
+13.47%
|
215/80-13
d=26.54
w=6.77
+17.21%
|
215/85-13
d=27.39
w=7.19
+20.95%
|
| 225 |
225/25-13
d=17.43
w=2.21
-23.04%
|
225/30-13
d=18.31
w=2.66
-19.12%
|
225/35-13
d=19.20
w=3.10
-15.21%
|
225/40-13
d=20.09
w=3.54
-11.30%
|
225/45-13
d=20.97
w=3.99
-7.39%
|
225/50-13
d=21.86
w=4.43
-3.48%
|
225/55-13
d=22.74
w=4.87
+0.43%
|
225/60-13
d=23.63
w=5.31
+4.35%
|
225/65-13
d=24.52
w=5.76
+8.26%
|
225/70-13
d=25.40
w=6.20
+12.17%
|
225/75-13
d=26.29
w=6.64
+16.08%
|
225/80-13
d=27.17
w=7.09
+19.99%
|
225/85-13
d=28.06
w=7.53
+23.90%
|
| 235 |
235/25-13
d=17.63
w=2.31
-22.17%
|
235/30-13
d=18.55
w=2.78
-18.08%
|
235/35-13
d=19.48
w=3.24
-14.00%
|
235/40-13
d=20.40
w=3.70
-9.91%
|
235/45-13
d=21.33
w=4.16
-5.82%
|
235/50-13
d=22.25
w=4.63
-1.74%
|
235/55-13
d=23.18
w=5.09
+2.35%
|
235/60-13
d=24.10
w=5.55
+6.43%
|
235/65-13
d=25.03
w=6.01
+10.52%
|
235/70-13
d=25.95
w=6.48
+14.60%
|
235/75-13
d=26.88
w=6.94
+18.69%
|
235/80-13
d=27.80
w=7.40
+22.77%
|
235/85-13
d=28.73
w=7.86
+26.86%
|
| 245 |
245/25-13
d=17.82
w=2.41
-21.30%
|
245/30-13
d=18.79
w=2.89
-17.04%
|
245/35-13
d=19.75
w=3.38
-12.78%
|
245/40-13
d=20.72
w=3.86
-8.52%
|
245/45-13
d=21.68
w=4.34
-4.26%
|
245/50-13
d=22.65
w=4.82
0.00%
|
245/55-13
d=23.61
w=5.31
+4.26%
|
245/60-13
d=24.57
w=5.79
+8.52%
|
245/65-13
d=25.54
w=6.27
+12.78%
|
245/70-13
d=26.50
w=6.75
+17.04%
|
245/75-13
d=27.47
w=7.23
+21.30%
|
245/80-13
d=28.43
w=7.72
+25.56%
|
245/85-13
d=29.40
w=8.20
+29.82%
|
| 255 |
255/25-13
d=18.02
w=2.51
-20.43%
|
255/30-13
d=19.02
w=3.01
-15.99%
|
255/35-13
d=20.03
w=3.51
-11.56%
|
255/40-13
d=21.03
w=4.02
-7.13%
|
255/45-13
d=22.04
w=4.52
-2.69%
|
255/50-13
d=23.04
w=5.02
+1.74%
|
255/55-13
d=24.04
w=5.52
+6.17%
|
255/60-13
d=25.05
w=6.02
+10.61%
|
255/65-13
d=26.05
w=6.53
+15.04%
|
255/70-13
d=27.06
w=7.03
+19.47%
|
255/75-13
d=28.06
w=7.53
+23.90%
|
255/80-13
d=29.06
w=8.03
+28.34%
|
255/85-13
d=30.07
w=8.53
+32.77%
|
| 265 |
265/25-13
d=18.22
w=2.61
-19.56%
|
265/30-13
d=19.26
w=3.13
-14.95%
|
265/35-13
d=20.30
w=3.65
-10.34%
|
265/40-13
d=21.35
w=4.17
-5.74%
|
265/45-13
d=22.39
w=4.69
-1.13%
|
265/50-13
d=23.43
w=5.22
+3.48%
|
265/55-13
d=24.48
w=5.74
+8.08%
|
265/60-13
d=25.52
w=6.26
+12.69%
|
265/65-13
d=26.56
w=6.78
+17.30%
|
265/70-13
d=27.61
w=7.30
+21.91%
|
265/75-13
d=28.65
w=7.82
+26.51%
|
265/80-13
d=29.69
w=8.35
+31.12%
|
265/85-13
d=30.74
w=8.87
+35.73%
|
| 275 |
275/25-13
d=18.41
w=2.71
-18.69%
|
275/30-13
d=19.50
w=3.25
-13.91%
|
275/35-13
d=20.58
w=3.79
-9.13%
|
275/40-13
d=21.66
w=4.33
-4.35%
|
275/45-13
d=22.74
w=4.87
+0.43%
|
275/50-13
d=23.83
w=5.41
+5.22%
|
275/55-13
d=24.91
w=5.95
+10.00%
|
275/60-13
d=25.99
w=6.50
+14.78%
|
275/65-13
d=27.07
w=7.04
+19.56%
|
275/70-13
d=28.16
w=7.58
+24.34%
|
275/75-13
d=29.24
w=8.12
+29.12%
|
275/80-13
d=30.32
w=8.66
+33.90%
|
275/85-13
d=31.41
w=9.20
+38.68%
|
| 285 |
285/25-13
d=18.61
w=2.81
-17.82%
|
285/30-13
d=19.73
w=3.37
-12.87%
|
285/35-13
d=20.85
w=3.93
-7.91%
|
285/40-13
d=21.98
w=4.49
-2.96%
|
285/45-13
d=23.10
w=5.05
+2.00%
|
285/50-13
d=24.22
w=5.61
+6.95%
|
285/55-13
d=25.34
w=6.17
+11.91%
|
285/60-13
d=26.46
w=6.73
+16.86%
|
285/65-13
d=27.59
w=7.29
+21.82%
|
285/70-13
d=28.71
w=7.85
+26.77%
|
285/75-13
d=29.83
w=8.42
+31.73%
|
285/80-13
d=30.95
w=8.98
+36.68%
|
285/85-13
d=32.07
w=9.54
+41.64%
|
| 295 |
295/25-13
d=18.81
w=2.90
-16.95%
|
295/30-13
d=19.97
w=3.48
-11.82%
|
295/35-13
d=21.13
w=4.06
-6.69%
|
295/40-13
d=22.29
w=4.65
-1.56%
|
295/45-13
d=23.45
w=5.23
+3.56%
|
295/50-13
d=24.61
w=5.81
+8.69%
|
295/55-13
d=25.78
w=6.39
+13.82%
|
295/60-13
d=26.94
w=6.97
+18.95%
|
295/65-13
d=28.10
w=7.55
+24.08%
|
295/70-13
d=29.26
w=8.13
+29.21%
|
295/75-13
d=30.42
w=8.71
+34.34%
|
295/80-13
d=31.58
w=9.29
+39.46%
|
295/85-13
d=32.74
w=9.87
+44.59%
|
| 305 |
305/25-13
d=19.00
w=3.00
-16.08%
|
305/30-13
d=20.20
w=3.60
-10.78%
|
305/35-13
d=21.41
w=4.20
-5.48%
|
305/40-13
d=22.61
w=4.80
-0.17%
|
305/45-13
d=23.81
w=5.40
+5.13%
|
305/50-13
d=25.01
w=6.00
+10.43%
|
305/55-13
d=26.21
w=6.60
+15.73%
|
305/60-13
d=27.41
w=7.20
+21.04%
|
305/65-13
d=28.61
w=7.81
+26.34%
|
305/70-13
d=29.81
w=8.41
+31.64%
|
305/75-13
d=31.01
w=9.01
+36.94%
|
305/80-13
d=32.21
w=9.61
+42.25%
|
305/85-13
d=33.41
w=10.21
+47.55%
|
| 315 |
315/25-13
d=19.20
w=3.10
-15.21%
|
315/30-13
d=20.44
w=3.72
-9.74%
|
315/35-13
d=21.68
w=4.34
-4.26%
|
315/40-13
d=22.92
w=4.96
+1.22%
|
315/45-13
d=24.16
w=5.58
+6.69%
|
315/50-13
d=25.40
w=6.20
+12.17%
|
315/55-13
d=26.64
w=6.82
+17.65%
|
315/60-13
d=27.88
w=7.44
+23.12%
|
315/65-13
d=29.12
w=8.06
+28.60%
|
315/70-13
d=30.36
w=8.68
+34.08%
|
315/75-13
d=31.60
w=9.30
+39.55%
|
315/80-13
d=32.84
w=9.92
+45.03%
|
315/85-13
d=34.08
w=10.54
+50.50%
|
| 325 |
325/25-13
d=19.40
w=3.20
-14.34%
|
325/30-13
d=20.68
w=3.84
-8.69%
|
325/35-13
d=21.96
w=4.48
-3.04%
|
325/40-13
d=23.24
w=5.12
+2.61%
|
325/45-13
d=24.52
w=5.76
+8.26%
|
325/50-13
d=25.80
w=6.40
+13.91%
|
325/55-13
d=27.07
w=7.04
+19.56%
|
325/60-13
d=28.35
w=7.68
+25.21%
|
325/65-13
d=29.63
w=8.32
+30.86%
|
325/70-13
d=30.91
w=8.96
+36.51%
|
325/75-13
d=32.19
w=9.60
+42.16%
|
325/80-13
d=33.47
w=10.24
+47.81%
|
325/85-13
d=34.75
w=10.88
+53.46%
|
| 335 |
335/25-13
d=19.59
w=3.30
-13.47%
|
335/30-13
d=20.91
w=3.96
-7.65%
|
335/35-13
d=22.23
w=4.62
-1.83%
|
335/40-13
d=23.55
w=5.28
+4.00%
|
335/45-13
d=24.87
w=5.94
+9.82%
|
335/50-13
d=26.19
w=6.59
+15.65%
|
335/55-13
d=27.51
w=7.25
+21.47%
|
335/60-13
d=28.83
w=7.91
+27.29%
|
335/65-13
d=30.15
w=8.57
+33.12%
|
335/70-13
d=31.46
w=9.23
+38.94%
|
335/75-13
d=32.78
w=9.89
+44.77%
|
335/80-13
d=34.10
w=10.55
+50.59%
|
335/85-13
d=35.42
w=11.21
+56.42%
|
|
Wheel Size 14
|
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Wheel Size 15
|
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Wheel Size 16
|
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|
Wheel Size 16.5
|
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|
Wheel Size 17
|
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|
Wheel Size 18
|
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|
Wheel Size 19
|
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|
Wheel Size 20
|
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|
Wheel Size 21
|
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The information on this page is intended to be helpful, but there is absolutely no guarantee of its accuracy, safety, or applicability for any particular use. The data is calculated mathematically, not taken from any official or recommended guide.
Please excercise a common sense, follow manufacturer and dealer recommendations, and check with other sources.
Tires are a safety equipment, don't take their selection lightly!