| Code | Difference | = 50mph | 1000miles = | Diameter | Wall,in | Wall,mm |
|---|---|---|---|---|---|---|
| 215/50-13 | 0.00 % | 50.00 | 1,000.00 | 21.46 | 4.23 | 107.50 |
| 195/55-13 | -0.09 % | 49.95 | 1,000.92 | 21.44 | 4.22 | 107.25 |
| 165/65-13 | -0.09 % | 49.95 | 1,000.92 | 21.44 | 4.22 | 107.25 |
| 305/35-13 | -0.28 % | 49.86 | 1,002.75 | 21.41 | 4.20 | 106.75 |
| 155/70-13 | +0.37 % | 50.18 | 996.33 | 21.54 | 4.27 | 108.50 |
| 145/75-13 | +0.46 % | 50.23 | 995.41 | 21.56 | 4.28 | 108.75 |
| 265/40-13 | -0.55 % | 49.72 | 1,005.50 | 21.35 | 4.17 | 106.00 |
| 235/45-13 | -0.64 % | 49.68 | 1,006.42 | 21.33 | 4.16 | 105.75 |
| 275/40-13 | +0.92 % | 50.46 | 990.83 | 21.66 | 4.33 | 110.00 |
| 175/60-13 | -0.92 % | 49.54 | 1,009.17 | 21.27 | 4.13 | 105.00 |
| 315/35-13 | +1.01 % | 50.50 | 989.91 | 21.68 | 4.34 | 110.25 |
| 245/45-13 | +1.01 % | 50.50 | 989.91 | 21.68 | 4.34 | 110.25 |
| 185/60-13 | +1.28 % | 50.64 | 987.16 | 21.74 | 4.37 | 111.00 |
| 295/35-13 | -1.56 % | 49.22 | 1,015.59 | 21.13 | 4.06 | 103.25 |
| 225/50-13 | +1.83 % | 50.92 | 981.66 | 21.86 | 4.43 | 112.50 |
| 205/50-13 | -1.83 % | 49.08 | 1,018.34 | 21.07 | 4.04 | 102.50 |
| 205/55-13 | +1.93 % | 50.96 | 980.74 | 21.88 | 4.44 | 112.75 |
| 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
-26.14%
|
145/30-13
d=16.43
w=1.71
-23.48%
|
145/35-13
d=17.00
w=2.00
-20.82%
|
145/40-13
d=17.57
w=2.28
-18.16%
|
145/45-13
d=18.14
w=2.57
-15.50%
|
145/50-13
d=18.71
w=2.85
-12.84%
|
145/55-13
d=19.28
w=3.14
-10.18%
|
145/60-13
d=19.85
w=3.43
-7.52%
|
145/65-13
d=20.42
w=3.71
-4.86%
|
145/70-13
d=20.99
w=4.00
-2.20%
|
145/75-13
d=21.56
w=4.28
+0.46%
|
145/80-13
d=22.13
w=4.57
+3.12%
|
145/85-13
d=22.70
w=4.85
+5.78%
|
| 155 |
155/25-13
d=16.05
w=1.53
-25.22%
|
155/30-13
d=16.66
w=1.83
-22.38%
|
155/35-13
d=17.27
w=2.14
-19.53%
|
155/40-13
d=17.88
w=2.44
-16.69%
|
155/45-13
d=18.49
w=2.75
-13.85%
|
155/50-13
d=19.10
w=3.05
-11.01%
|
155/55-13
d=19.71
w=3.36
-8.16%
|
155/60-13
d=20.32
w=3.66
-5.32%
|
155/65-13
d=20.93
w=3.97
-2.48%
|
155/70-13
d=21.54
w=4.27
+0.37%
|
155/75-13
d=22.15
w=4.58
+3.21%
|
155/80-13
d=22.76
w=4.88
+6.05%
|
155/85-13
d=23.37
w=5.19
+8.90%
|
| 165 |
165/25-13
d=16.25
w=1.62
-24.30%
|
165/30-13
d=16.90
w=1.95
-21.28%
|
165/35-13
d=17.55
w=2.27
-18.25%
|
165/40-13
d=18.20
w=2.60
-15.22%
|
165/45-13
d=18.85
w=2.92
-12.20%
|
165/50-13
d=19.50
w=3.25
-9.17%
|
165/55-13
d=20.15
w=3.57
-6.14%
|
165/60-13
d=20.80
w=3.90
-3.12%
|
165/65-13
d=21.44
w=4.22
-0.09%
|
165/70-13
d=22.09
w=4.55
+2.93%
|
165/75-13
d=22.74
w=4.87
+5.96%
|
165/80-13
d=23.39
w=5.20
+8.99%
|
165/85-13
d=24.04
w=5.52
+12.01%
|
| 175 |
175/25-13
d=16.44
w=1.72
-23.39%
|
175/30-13
d=17.13
w=2.07
-20.18%
|
175/35-13
d=17.82
w=2.41
-16.97%
|
175/40-13
d=18.51
w=2.76
-13.76%
|
175/45-13
d=19.20
w=3.10
-10.55%
|
175/50-13
d=19.89
w=3.44
-7.34%
|
175/55-13
d=20.58
w=3.79
-4.13%
|
175/60-13
d=21.27
w=4.13
-0.92%
|
175/65-13
d=21.96
w=4.48
+2.29%
|
175/70-13
d=22.65
w=4.82
+5.50%
|
175/75-13
d=23.33
w=5.17
+8.71%
|
175/80-13
d=24.02
w=5.51
+11.92%
|
175/85-13
d=24.71
w=5.86
+15.13%
|
| 185 |
185/25-13
d=16.64
w=1.82
-22.47%
|
185/30-13
d=17.37
w=2.19
-19.08%
|
185/35-13
d=18.10
w=2.55
-15.68%
|
185/40-13
d=18.83
w=2.91
-12.29%
|
185/45-13
d=19.56
w=3.28
-8.90%
|
185/50-13
d=20.28
w=3.64
-5.50%
|
185/55-13
d=21.01
w=4.01
-2.11%
|
185/60-13
d=21.74
w=4.37
+1.28%
|
185/65-13
d=22.47
w=4.73
+4.68%
|
185/70-13
d=23.20
w=5.10
+8.07%
|
185/75-13
d=23.93
w=5.46
+11.46%
|
185/80-13
d=24.65
w=5.83
+14.86%
|
185/85-13
d=25.38
w=6.19
+18.25%
|
| 195 |
195/25-13
d=16.84
w=1.92
-21.55%
|
195/30-13
d=17.61
w=2.30
-17.98%
|
195/35-13
d=18.37
w=2.69
-14.40%
|
195/40-13
d=19.14
w=3.07
-10.82%
|
195/45-13
d=19.91
w=3.45
-7.25%
|
195/50-13
d=20.68
w=3.84
-3.67%
|
195/55-13
d=21.44
w=4.22
-0.09%
|
195/60-13
d=22.21
w=4.61
+3.48%
|
195/65-13
d=22.98
w=4.99
+7.06%
|
195/70-13
d=23.75
w=5.37
+10.64%
|
195/75-13
d=24.52
w=5.76
+14.21%
|
195/80-13
d=25.28
w=6.14
+17.79%
|
195/85-13
d=26.05
w=6.53
+21.37%
|
| 205 |
205/25-13
d=17.04
w=2.02
-20.63%
|
205/30-13
d=17.84
w=2.42
-16.87%
|
205/35-13
d=18.65
w=2.82
-13.11%
|
205/40-13
d=19.46
w=3.23
-9.35%
|
205/45-13
d=20.26
w=3.63
-5.59%
|
205/50-13
d=21.07
w=4.04
-1.83%
|
205/55-13
d=21.88
w=4.44
+1.93%
|
205/60-13
d=22.69
w=4.84
+5.69%
|
205/65-13
d=23.49
w=5.25
+9.45%
|
205/70-13
d=24.30
w=5.65
+13.21%
|
205/75-13
d=25.11
w=6.05
+16.97%
|
205/80-13
d=25.91
w=6.46
+20.73%
|
205/85-13
d=26.72
w=6.86
+24.49%
|
| 215 |
215/25-13
d=17.23
w=2.12
-19.72%
|
215/30-13
d=18.08
w=2.54
-15.77%
|
215/35-13
d=18.93
w=2.96
-11.83%
|
215/40-13
d=19.77
w=3.39
-7.89%
|
215/45-13
d=20.62
w=3.81
-3.94%
|
215/50-13
d=21.46
w=4.23
0.00%
|
215/55-13
d=22.31
w=4.66
+3.94%
|
215/60-13
d=23.16
w=5.08
+7.89%
|
215/65-13
d=24.00
w=5.50
+11.83%
|
215/70-13
d=24.85
w=5.93
+15.77%
|
215/75-13
d=25.70
w=6.35
+19.72%
|
215/80-13
d=26.54
w=6.77
+23.66%
|
215/85-13
d=27.39
w=7.19
+27.60%
|
| 225 |
225/25-13
d=17.43
w=2.21
-18.80%
|
225/30-13
d=18.31
w=2.66
-14.67%
|
225/35-13
d=19.20
w=3.10
-10.55%
|
225/40-13
d=20.09
w=3.54
-6.42%
|
225/45-13
d=20.97
w=3.99
-2.29%
|
225/50-13
d=21.86
w=4.43
+1.83%
|
225/55-13
d=22.74
w=4.87
+5.96%
|
225/60-13
d=23.63
w=5.31
+10.09%
|
225/65-13
d=24.52
w=5.76
+14.21%
|
225/70-13
d=25.40
w=6.20
+18.34%
|
225/75-13
d=26.29
w=6.64
+22.47%
|
225/80-13
d=27.17
w=7.09
+26.60%
|
225/85-13
d=28.06
w=7.53
+30.72%
|
| 235 |
235/25-13
d=17.63
w=2.31
-17.88%
|
235/30-13
d=18.55
w=2.78
-13.57%
|
235/35-13
d=19.48
w=3.24
-9.26%
|
235/40-13
d=20.40
w=3.70
-4.95%
|
235/45-13
d=21.33
w=4.16
-0.64%
|
235/50-13
d=22.25
w=4.63
+3.67%
|
235/55-13
d=23.18
w=5.09
+7.98%
|
235/60-13
d=24.10
w=5.55
+12.29%
|
235/65-13
d=25.03
w=6.01
+16.60%
|
235/70-13
d=25.95
w=6.48
+20.91%
|
235/75-13
d=26.88
w=6.94
+25.22%
|
235/80-13
d=27.80
w=7.40
+29.53%
|
235/85-13
d=28.73
w=7.86
+33.84%
|
| 245 |
245/25-13
d=17.82
w=2.41
-16.97%
|
245/30-13
d=18.79
w=2.89
-12.47%
|
245/35-13
d=19.75
w=3.38
-7.98%
|
245/40-13
d=20.72
w=3.86
-3.48%
|
245/45-13
d=21.68
w=4.34
+1.01%
|
245/50-13
d=22.65
w=4.82
+5.50%
|
245/55-13
d=23.61
w=5.31
+10.00%
|
245/60-13
d=24.57
w=5.79
+14.49%
|
245/65-13
d=25.54
w=6.27
+18.98%
|
245/70-13
d=26.50
w=6.75
+23.48%
|
245/75-13
d=27.47
w=7.23
+27.97%
|
245/80-13
d=28.43
w=7.72
+32.47%
|
245/85-13
d=29.40
w=8.20
+36.96%
|
| 255 |
255/25-13
d=18.02
w=2.51
-16.05%
|
255/30-13
d=19.02
w=3.01
-11.37%
|
255/35-13
d=20.03
w=3.51
-6.69%
|
255/40-13
d=21.03
w=4.02
-2.02%
|
255/45-13
d=22.04
w=4.52
+2.66%
|
255/50-13
d=23.04
w=5.02
+7.34%
|
255/55-13
d=24.04
w=5.52
+12.01%
|
255/60-13
d=25.05
w=6.02
+16.69%
|
255/65-13
d=26.05
w=6.53
+21.37%
|
255/70-13
d=27.06
w=7.03
+26.05%
|
255/75-13
d=28.06
w=7.53
+30.72%
|
255/80-13
d=29.06
w=8.03
+35.40%
|
255/85-13
d=30.07
w=8.53
+40.08%
|
| 265 |
265/25-13
d=18.22
w=2.61
-15.13%
|
265/30-13
d=19.26
w=3.13
-10.27%
|
265/35-13
d=20.30
w=3.65
-5.41%
|
265/40-13
d=21.35
w=4.17
-0.55%
|
265/45-13
d=22.39
w=4.69
+4.31%
|
265/50-13
d=23.43
w=5.22
+9.17%
|
265/55-13
d=24.48
w=5.74
+14.03%
|
265/60-13
d=25.52
w=6.26
+18.89%
|
265/65-13
d=26.56
w=6.78
+23.75%
|
265/70-13
d=27.61
w=7.30
+28.61%
|
265/75-13
d=28.65
w=7.82
+33.47%
|
265/80-13
d=29.69
w=8.35
+38.33%
|
265/85-13
d=30.74
w=8.87
+43.20%
|
| 275 |
275/25-13
d=18.41
w=2.71
-14.21%
|
275/30-13
d=19.50
w=3.25
-9.17%
|
275/35-13
d=20.58
w=3.79
-4.13%
|
275/40-13
d=21.66
w=4.33
+0.92%
|
275/45-13
d=22.74
w=4.87
+5.96%
|
275/50-13
d=23.83
w=5.41
+11.01%
|
275/55-13
d=24.91
w=5.95
+16.05%
|
275/60-13
d=25.99
w=6.50
+21.09%
|
275/65-13
d=27.07
w=7.04
+26.14%
|
275/70-13
d=28.16
w=7.58
+31.18%
|
275/75-13
d=29.24
w=8.12
+36.23%
|
275/80-13
d=30.32
w=8.66
+41.27%
|
275/85-13
d=31.41
w=9.20
+46.31%
|
| 285 |
285/25-13
d=18.61
w=2.81
-13.30%
|
285/30-13
d=19.73
w=3.37
-8.07%
|
285/35-13
d=20.85
w=3.93
-2.84%
|
285/40-13
d=21.98
w=4.49
+2.38%
|
285/45-13
d=23.10
w=5.05
+7.61%
|
285/50-13
d=24.22
w=5.61
+12.84%
|
285/55-13
d=25.34
w=6.17
+18.07%
|
285/60-13
d=26.46
w=6.73
+23.29%
|
285/65-13
d=27.59
w=7.29
+28.52%
|
285/70-13
d=28.71
w=7.85
+33.75%
|
285/75-13
d=29.83
w=8.42
+38.98%
|
285/80-13
d=30.95
w=8.98
+44.20%
|
285/85-13
d=32.07
w=9.54
+49.43%
|
| 295 |
295/25-13
d=18.81
w=2.90
-12.38%
|
295/30-13
d=19.97
w=3.48
-6.97%
|
295/35-13
d=21.13
w=4.06
-1.56%
|
295/40-13
d=22.29
w=4.65
+3.85%
|
295/45-13
d=23.45
w=5.23
+9.26%
|
295/50-13
d=24.61
w=5.81
+14.67%
|
295/55-13
d=25.78
w=6.39
+20.08%
|
295/60-13
d=26.94
w=6.97
+25.50%
|
295/65-13
d=28.10
w=7.55
+30.91%
|
295/70-13
d=29.26
w=8.13
+36.32%
|
295/75-13
d=30.42
w=8.71
+41.73%
|
295/80-13
d=31.58
w=9.29
+47.14%
|
295/85-13
d=32.74
w=9.87
+52.55%
|
| 305 |
305/25-13
d=19.00
w=3.00
-11.46%
|
305/30-13
d=20.20
w=3.60
-5.87%
|
305/35-13
d=21.41
w=4.20
-0.28%
|
305/40-13
d=22.61
w=4.80
+5.32%
|
305/45-13
d=23.81
w=5.40
+10.91%
|
305/50-13
d=25.01
w=6.00
+16.51%
|
305/55-13
d=26.21
w=6.60
+22.10%
|
305/60-13
d=27.41
w=7.20
+27.70%
|
305/65-13
d=28.61
w=7.81
+33.29%
|
305/70-13
d=29.81
w=8.41
+38.88%
|
305/75-13
d=31.01
w=9.01
+44.48%
|
305/80-13
d=32.21
w=9.61
+50.07%
|
305/85-13
d=33.41
w=10.21
+55.67%
|
| 315 |
315/25-13
d=19.20
w=3.10
-10.55%
|
315/30-13
d=20.44
w=3.72
-4.77%
|
315/35-13
d=21.68
w=4.34
+1.01%
|
315/40-13
d=22.92
w=4.96
+6.79%
|
315/45-13
d=24.16
w=5.58
+12.56%
|
315/50-13
d=25.40
w=6.20
+18.34%
|
315/55-13
d=26.64
w=6.82
+24.12%
|
315/60-13
d=27.88
w=7.44
+29.90%
|
315/65-13
d=29.12
w=8.06
+35.67%
|
315/70-13
d=30.36
w=8.68
+41.45%
|
315/75-13
d=31.60
w=9.30
+47.23%
|
315/80-13
d=32.84
w=9.92
+53.01%
|
315/85-13
d=34.08
w=10.54
+58.79%
|
| 325 |
325/25-13
d=19.40
w=3.20
-9.63%
|
325/30-13
d=20.68
w=3.84
-3.67%
|
325/35-13
d=21.96
w=4.48
+2.29%
|
325/40-13
d=23.24
w=5.12
+8.25%
|
325/45-13
d=24.52
w=5.76
+14.21%
|
325/50-13
d=25.80
w=6.40
+20.18%
|
325/55-13
d=27.07
w=7.04
+26.14%
|
325/60-13
d=28.35
w=7.68
+32.10%
|
325/65-13
d=29.63
w=8.32
+38.06%
|
325/70-13
d=30.91
w=8.96
+44.02%
|
325/75-13
d=32.19
w=9.60
+49.98%
|
325/80-13
d=33.47
w=10.24
+55.94%
|
325/85-13
d=34.75
w=10.88
+61.90%
|
| 335 |
335/25-13
d=19.59
w=3.30
-8.71%
|
335/30-13
d=20.91
w=3.96
-2.57%
|
335/35-13
d=22.23
w=4.62
+3.58%
|
335/40-13
d=23.55
w=5.28
+9.72%
|
335/45-13
d=24.87
w=5.94
+15.87%
|
335/50-13
d=26.19
w=6.59
+22.01%
|
335/55-13
d=27.51
w=7.25
+28.15%
|
335/60-13
d=28.83
w=7.91
+34.30%
|
335/65-13
d=30.15
w=8.57
+40.44%
|
335/70-13
d=31.46
w=9.23
+46.59%
|
335/75-13
d=32.78
w=9.89
+52.73%
|
335/80-13
d=34.10
w=10.55
+58.88%
|
335/85-13
d=35.42
w=11.21
+65.02%
|
|
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!