| Code | Difference | = 50mph | 1000miles = | Diameter | Wall,in | Wall,mm |
|---|---|---|---|---|---|---|
| 165/70-13 | 0.00 % | 50.00 | 1,000.00 | 22.09 | 4.55 | 115.50 |
| 145/80-13 | +0.18 % | 50.09 | 998.22 | 22.13 | 4.57 | 116.00 |
| 155/75-13 | +0.27 % | 50.13 | 997.33 | 22.15 | 4.58 | 116.25 |
| 255/45-13 | -0.27 % | 49.87 | 1,002.67 | 22.04 | 4.52 | 114.75 |
| 285/40-13 | -0.53 % | 49.73 | 1,005.35 | 21.98 | 4.49 | 114.00 |
| 195/60-13 | +0.53 % | 50.27 | 994.65 | 22.21 | 4.61 | 117.00 |
| 325/35-13 | -0.62 % | 49.69 | 1,006.24 | 21.96 | 4.48 | 113.75 |
| 175/65-13 | -0.62 % | 49.69 | 1,006.24 | 21.96 | 4.48 | 113.75 |
| 335/35-13 | +0.62 % | 50.31 | 993.76 | 22.23 | 4.62 | 117.25 |
| 235/50-13 | +0.71 % | 50.36 | 992.87 | 22.25 | 4.63 | 117.50 |
| 295/40-13 | +0.89 % | 50.45 | 991.09 | 22.29 | 4.65 | 118.00 |
| 205/55-13 | -0.98 % | 49.51 | 1,009.80 | 21.88 | 4.44 | 112.75 |
| 215/55-13 | +0.98 % | 50.49 | 990.20 | 22.31 | 4.66 | 118.25 |
| 225/50-13 | -1.07 % | 49.47 | 1,010.69 | 21.86 | 4.43 | 112.50 |
| 265/45-13 | +1.34 % | 50.67 | 986.64 | 22.39 | 4.69 | 119.25 |
| 185/60-13 | -1.60 % | 49.20 | 1,016.04 | 21.74 | 4.37 | 111.00 |
| 185/65-13 | +1.69 % | 50.85 | 983.07 | 22.47 | 4.73 | 120.25 |
| 315/35-13 | -1.87 % | 49.06 | 1,018.71 | 21.68 | 4.34 | 110.25 |
| 245/45-13 | -1.87 % | 49.06 | 1,018.71 | 21.68 | 4.34 | 110.25 |
| 275/40-13 | -1.96 % | 49.02 | 1,019.60 | 21.66 | 4.33 | 110.00 |
| 305/40-13 | +2.32 % | 51.16 | 976.84 | 22.61 | 4.80 | 122.00 |
| 145/75-13 | -2.41 % | 48.80 | 1,024.06 | 21.56 | 4.28 | 108.75 |
| 155/70-13 | -2.49 % | 48.75 | 1,024.95 | 21.54 | 4.27 | 108.50 |
| 245/50-13 | +2.49 % | 51.25 | 975.05 | 22.65 | 4.82 | 122.50 |
| 175/70-13 | +2.49 % | 51.25 | 975.05 | 22.65 | 4.82 | 122.50 |
| 205/60-13 | +2.67 % | 51.34 | 973.27 | 22.69 | 4.84 | 123.00 |
| 145/85-13 | +2.76 % | 51.38 | 972.38 | 22.70 | 4.85 | 123.25 |
| 215/50-13 | -2.85 % | 48.57 | 1,028.51 | 21.46 | 4.23 | 107.50 |
| 275/45-13 | +2.94 % | 51.47 | 970.60 | 22.74 | 4.87 | 123.75 |
| 195/55-13 | -2.94 % | 48.53 | 1,029.40 | 21.44 | 4.22 | 107.25 |
| 225/55-13 | +2.94 % | 51.47 | 970.60 | 22.74 | 4.87 | 123.75 |
| 165/65-13 | -2.94 % | 48.53 | 1,029.40 | 21.44 | 4.22 | 107.25 |
| 165/75-13 | +2.94 % | 51.47 | 970.60 | 22.74 | 4.87 | 123.75 |
| 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
-28.24%
|
145/30-13
d=16.43
w=1.71
-25.66%
|
145/35-13
d=17.00
w=2.00
-23.08%
|
145/40-13
d=17.57
w=2.28
-20.49%
|
145/45-13
d=18.14
w=2.57
-17.91%
|
145/50-13
d=18.71
w=2.85
-15.32%
|
145/55-13
d=19.28
w=3.14
-12.74%
|
145/60-13
d=19.85
w=3.43
-10.16%
|
145/65-13
d=20.42
w=3.71
-7.57%
|
145/70-13
d=20.99
w=4.00
-4.99%
|
145/75-13
d=21.56
w=4.28
-2.41%
|
145/80-13
d=22.13
w=4.57
+0.18%
|
145/85-13
d=22.70
w=4.85
+2.76%
|
| 155 |
155/25-13
d=16.05
w=1.53
-27.35%
|
155/30-13
d=16.66
w=1.83
-24.59%
|
155/35-13
d=17.27
w=2.14
-21.83%
|
155/40-13
d=17.88
w=2.44
-19.07%
|
155/45-13
d=18.49
w=2.75
-16.30%
|
155/50-13
d=19.10
w=3.05
-13.54%
|
155/55-13
d=19.71
w=3.36
-10.78%
|
155/60-13
d=20.32
w=3.66
-8.02%
|
155/65-13
d=20.93
w=3.97
-5.26%
|
155/70-13
d=21.54
w=4.27
-2.49%
|
155/75-13
d=22.15
w=4.58
+0.27%
|
155/80-13
d=22.76
w=4.88
+3.03%
|
155/85-13
d=23.37
w=5.19
+5.79%
|
| 165 |
165/25-13
d=16.25
w=1.62
-26.46%
|
165/30-13
d=16.90
w=1.95
-23.52%
|
165/35-13
d=17.55
w=2.27
-20.58%
|
165/40-13
d=18.20
w=2.60
-17.64%
|
165/45-13
d=18.85
w=2.92
-14.70%
|
165/50-13
d=19.50
w=3.25
-11.76%
|
165/55-13
d=20.15
w=3.57
-8.82%
|
165/60-13
d=20.80
w=3.90
-5.88%
|
165/65-13
d=21.44
w=4.22
-2.94%
|
165/70-13
d=22.09
w=4.55
0.00%
|
165/75-13
d=22.74
w=4.87
+2.94%
|
165/80-13
d=23.39
w=5.20
+5.88%
|
165/85-13
d=24.04
w=5.52
+8.82%
|
| 175 |
175/25-13
d=16.44
w=1.72
-25.57%
|
175/30-13
d=17.13
w=2.07
-22.45%
|
175/35-13
d=17.82
w=2.41
-19.33%
|
175/40-13
d=18.51
w=2.76
-16.22%
|
175/45-13
d=19.20
w=3.10
-13.10%
|
175/50-13
d=19.89
w=3.44
-9.98%
|
175/55-13
d=20.58
w=3.79
-6.86%
|
175/60-13
d=21.27
w=4.13
-3.74%
|
175/65-13
d=21.96
w=4.48
-0.62%
|
175/70-13
d=22.65
w=4.82
+2.49%
|
175/75-13
d=23.33
w=5.17
+5.61%
|
175/80-13
d=24.02
w=5.51
+8.73%
|
175/85-13
d=24.71
w=5.86
+11.85%
|
| 185 |
185/25-13
d=16.64
w=1.82
-24.68%
|
185/30-13
d=17.37
w=2.19
-21.38%
|
185/35-13
d=18.10
w=2.55
-18.09%
|
185/40-13
d=18.83
w=2.91
-14.79%
|
185/45-13
d=19.56
w=3.28
-11.49%
|
185/50-13
d=20.28
w=3.64
-8.20%
|
185/55-13
d=21.01
w=4.01
-4.90%
|
185/60-13
d=21.74
w=4.37
-1.60%
|
185/65-13
d=22.47
w=4.73
+1.69%
|
185/70-13
d=23.20
w=5.10
+4.99%
|
185/75-13
d=23.93
w=5.46
+8.29%
|
185/80-13
d=24.65
w=5.83
+11.58%
|
185/85-13
d=25.38
w=6.19
+14.88%
|
| 195 |
195/25-13
d=16.84
w=1.92
-23.79%
|
195/30-13
d=17.61
w=2.30
-20.31%
|
195/35-13
d=18.37
w=2.69
-16.84%
|
195/40-13
d=19.14
w=3.07
-13.36%
|
195/45-13
d=19.91
w=3.45
-9.89%
|
195/50-13
d=20.68
w=3.84
-6.41%
|
195/55-13
d=21.44
w=4.22
-2.94%
|
195/60-13
d=22.21
w=4.61
+0.53%
|
195/65-13
d=22.98
w=4.99
+4.01%
|
195/70-13
d=23.75
w=5.37
+7.48%
|
195/75-13
d=24.52
w=5.76
+10.96%
|
195/80-13
d=25.28
w=6.14
+14.43%
|
195/85-13
d=26.05
w=6.53
+17.91%
|
| 205 |
205/25-13
d=17.04
w=2.02
-22.90%
|
205/30-13
d=17.84
w=2.42
-19.24%
|
205/35-13
d=18.65
w=2.82
-15.59%
|
205/40-13
d=19.46
w=3.23
-11.94%
|
205/45-13
d=20.26
w=3.63
-8.29%
|
205/50-13
d=21.07
w=4.04
-4.63%
|
205/55-13
d=21.88
w=4.44
-0.98%
|
205/60-13
d=22.69
w=4.84
+2.67%
|
205/65-13
d=23.49
w=5.25
+6.33%
|
205/70-13
d=24.30
w=5.65
+9.98%
|
205/75-13
d=25.11
w=6.05
+13.63%
|
205/80-13
d=25.91
w=6.46
+17.28%
|
205/85-13
d=26.72
w=6.86
+20.94%
|
| 215 |
215/25-13
d=17.23
w=2.12
-22.01%
|
215/30-13
d=18.08
w=2.54
-18.18%
|
215/35-13
d=18.93
w=2.96
-14.34%
|
215/40-13
d=19.77
w=3.39
-10.51%
|
215/45-13
d=20.62
w=3.81
-6.68%
|
215/50-13
d=21.46
w=4.23
-2.85%
|
215/55-13
d=22.31
w=4.66
+0.98%
|
215/60-13
d=23.16
w=5.08
+4.81%
|
215/65-13
d=24.00
w=5.50
+8.64%
|
215/70-13
d=24.85
w=5.93
+12.47%
|
215/75-13
d=25.70
w=6.35
+16.30%
|
215/80-13
d=26.54
w=6.77
+20.14%
|
215/85-13
d=27.39
w=7.19
+23.97%
|
| 225 |
225/25-13
d=17.43
w=2.21
-21.12%
|
225/30-13
d=18.31
w=2.66
-17.11%
|
225/35-13
d=19.20
w=3.10
-13.10%
|
225/40-13
d=20.09
w=3.54
-9.09%
|
225/45-13
d=20.97
w=3.99
-5.08%
|
225/50-13
d=21.86
w=4.43
-1.07%
|
225/55-13
d=22.74
w=4.87
+2.94%
|
225/60-13
d=23.63
w=5.31
+6.95%
|
225/65-13
d=24.52
w=5.76
+10.96%
|
225/70-13
d=25.40
w=6.20
+14.97%
|
225/75-13
d=26.29
w=6.64
+18.98%
|
225/80-13
d=27.17
w=7.09
+22.99%
|
225/85-13
d=28.06
w=7.53
+27.00%
|
| 235 |
235/25-13
d=17.63
w=2.31
-20.22%
|
235/30-13
d=18.55
w=2.78
-16.04%
|
235/35-13
d=19.48
w=3.24
-11.85%
|
235/40-13
d=20.40
w=3.70
-7.66%
|
235/45-13
d=21.33
w=4.16
-3.47%
|
235/50-13
d=22.25
w=4.63
+0.71%
|
235/55-13
d=23.18
w=5.09
+4.90%
|
235/60-13
d=24.10
w=5.55
+9.09%
|
235/65-13
d=25.03
w=6.01
+13.28%
|
235/70-13
d=25.95
w=6.48
+17.46%
|
235/75-13
d=26.88
w=6.94
+21.65%
|
235/80-13
d=27.80
w=7.40
+25.84%
|
235/85-13
d=28.73
w=7.86
+30.02%
|
| 245 |
245/25-13
d=17.82
w=2.41
-19.33%
|
245/30-13
d=18.79
w=2.89
-14.97%
|
245/35-13
d=19.75
w=3.38
-10.60%
|
245/40-13
d=20.72
w=3.86
-6.24%
|
245/45-13
d=21.68
w=4.34
-1.87%
|
245/50-13
d=22.65
w=4.82
+2.49%
|
245/55-13
d=23.61
w=5.31
+6.86%
|
245/60-13
d=24.57
w=5.79
+11.23%
|
245/65-13
d=25.54
w=6.27
+15.59%
|
245/70-13
d=26.50
w=6.75
+19.96%
|
245/75-13
d=27.47
w=7.23
+24.32%
|
245/80-13
d=28.43
w=7.72
+28.69%
|
245/85-13
d=29.40
w=8.20
+33.05%
|
| 255 |
255/25-13
d=18.02
w=2.51
-18.44%
|
255/30-13
d=19.02
w=3.01
-13.90%
|
255/35-13
d=20.03
w=3.51
-9.35%
|
255/40-13
d=21.03
w=4.02
-4.81%
|
255/45-13
d=22.04
w=4.52
-0.27%
|
255/50-13
d=23.04
w=5.02
+4.28%
|
255/55-13
d=24.04
w=5.52
+8.82%
|
255/60-13
d=25.05
w=6.02
+13.36%
|
255/65-13
d=26.05
w=6.53
+17.91%
|
255/70-13
d=27.06
w=7.03
+22.45%
|
255/75-13
d=28.06
w=7.53
+27.00%
|
255/80-13
d=29.06
w=8.03
+31.54%
|
255/85-13
d=30.07
w=8.53
+36.08%
|
| 265 |
265/25-13
d=18.22
w=2.61
-17.55%
|
265/30-13
d=19.26
w=3.13
-12.83%
|
265/35-13
d=20.30
w=3.65
-8.11%
|
265/40-13
d=21.35
w=4.17
-3.39%
|
265/45-13
d=22.39
w=4.69
+1.34%
|
265/50-13
d=23.43
w=5.22
+6.06%
|
265/55-13
d=24.48
w=5.74
+10.78%
|
265/60-13
d=25.52
w=6.26
+15.50%
|
265/65-13
d=26.56
w=6.78
+20.22%
|
265/70-13
d=27.61
w=7.30
+24.95%
|
265/75-13
d=28.65
w=7.82
+29.67%
|
265/80-13
d=29.69
w=8.35
+34.39%
|
265/85-13
d=30.74
w=8.87
+39.11%
|
| 275 |
275/25-13
d=18.41
w=2.71
-16.66%
|
275/30-13
d=19.50
w=3.25
-11.76%
|
275/35-13
d=20.58
w=3.79
-6.86%
|
275/40-13
d=21.66
w=4.33
-1.96%
|
275/45-13
d=22.74
w=4.87
+2.94%
|
275/50-13
d=23.83
w=5.41
+7.84%
|
275/55-13
d=24.91
w=5.95
+12.74%
|
275/60-13
d=25.99
w=6.50
+17.64%
|
275/65-13
d=27.07
w=7.04
+22.54%
|
275/70-13
d=28.16
w=7.58
+27.44%
|
275/75-13
d=29.24
w=8.12
+32.34%
|
275/80-13
d=30.32
w=8.66
+37.24%
|
275/85-13
d=31.41
w=9.20
+42.14%
|
| 285 |
285/25-13
d=18.61
w=2.81
-15.77%
|
285/30-13
d=19.73
w=3.37
-10.69%
|
285/35-13
d=20.85
w=3.93
-5.61%
|
285/40-13
d=21.98
w=4.49
-0.53%
|
285/45-13
d=23.10
w=5.05
+4.54%
|
285/50-13
d=24.22
w=5.61
+9.62%
|
285/55-13
d=25.34
w=6.17
+14.70%
|
285/60-13
d=26.46
w=6.73
+19.78%
|
285/65-13
d=27.59
w=7.29
+24.86%
|
285/70-13
d=28.71
w=7.85
+29.94%
|
285/75-13
d=29.83
w=8.42
+35.01%
|
285/80-13
d=30.95
w=8.98
+40.09%
|
285/85-13
d=32.07
w=9.54
+45.17%
|
| 295 |
295/25-13
d=18.81
w=2.90
-14.88%
|
295/30-13
d=19.97
w=3.48
-9.62%
|
295/35-13
d=21.13
w=4.06
-4.37%
|
295/40-13
d=22.29
w=4.65
+0.89%
|
295/45-13
d=23.45
w=5.23
+6.15%
|
295/50-13
d=24.61
w=5.81
+11.40%
|
295/55-13
d=25.78
w=6.39
+16.66%
|
295/60-13
d=26.94
w=6.97
+21.92%
|
295/65-13
d=28.10
w=7.55
+27.17%
|
295/70-13
d=29.26
w=8.13
+32.43%
|
295/75-13
d=30.42
w=8.71
+37.69%
|
295/80-13
d=31.58
w=9.29
+42.94%
|
295/85-13
d=32.74
w=9.87
+48.20%
|
| 305 |
305/25-13
d=19.00
w=3.00
-13.99%
|
305/30-13
d=20.20
w=3.60
-8.55%
|
305/35-13
d=21.41
w=4.20
-3.12%
|
305/40-13
d=22.61
w=4.80
+2.32%
|
305/45-13
d=23.81
w=5.40
+7.75%
|
305/50-13
d=25.01
w=6.00
+13.19%
|
305/55-13
d=26.21
w=6.60
+18.62%
|
305/60-13
d=27.41
w=7.20
+24.06%
|
305/65-13
d=28.61
w=7.81
+29.49%
|
305/70-13
d=29.81
w=8.41
+34.93%
|
305/75-13
d=31.01
w=9.01
+40.36%
|
305/80-13
d=32.21
w=9.61
+45.79%
|
305/85-13
d=33.41
w=10.21
+51.23%
|
| 315 |
315/25-13
d=19.20
w=3.10
-13.10%
|
315/30-13
d=20.44
w=3.72
-7.48%
|
315/35-13
d=21.68
w=4.34
-1.87%
|
315/40-13
d=22.92
w=4.96
+3.74%
|
315/45-13
d=24.16
w=5.58
+9.35%
|
315/50-13
d=25.40
w=6.20
+14.97%
|
315/55-13
d=26.64
w=6.82
+20.58%
|
315/60-13
d=27.88
w=7.44
+26.19%
|
315/65-13
d=29.12
w=8.06
+31.81%
|
315/70-13
d=30.36
w=8.68
+37.42%
|
315/75-13
d=31.60
w=9.30
+43.03%
|
315/80-13
d=32.84
w=9.92
+48.65%
|
315/85-13
d=34.08
w=10.54
+54.26%
|
| 325 |
325/25-13
d=19.40
w=3.20
-12.21%
|
325/30-13
d=20.68
w=3.84
-6.41%
|
325/35-13
d=21.96
w=4.48
-0.62%
|
325/40-13
d=23.24
w=5.12
+5.17%
|
325/45-13
d=24.52
w=5.76
+10.96%
|
325/50-13
d=25.80
w=6.40
+16.75%
|
325/55-13
d=27.07
w=7.04
+22.54%
|
325/60-13
d=28.35
w=7.68
+28.33%
|
325/65-13
d=29.63
w=8.32
+34.12%
|
325/70-13
d=30.91
w=8.96
+39.91%
|
325/75-13
d=32.19
w=9.60
+45.71%
|
325/80-13
d=33.47
w=10.24
+51.50%
|
325/85-13
d=34.75
w=10.88
+57.29%
|
| 335 |
335/25-13
d=19.59
w=3.30
-11.32%
|
335/30-13
d=20.91
w=3.96
-5.35%
|
335/35-13
d=22.23
w=4.62
+0.62%
|
335/40-13
d=23.55
w=5.28
+6.59%
|
335/45-13
d=24.87
w=5.94
+12.56%
|
335/50-13
d=26.19
w=6.59
+18.53%
|
335/55-13
d=27.51
w=7.25
+24.50%
|
335/60-13
d=28.83
w=7.91
+30.47%
|
335/65-13
d=30.15
w=8.57
+36.44%
|
335/70-13
d=31.46
w=9.23
+42.41%
|
335/75-13
d=32.78
w=9.89
+48.38%
|
335/80-13
d=34.10
w=10.55
+54.35%
|
335/85-13
d=35.42
w=11.21
+60.32%
|
|
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!