| Code | Difference | = 50mph | 1000miles = | Diameter | Wall,in | Wall,mm |
|---|---|---|---|---|---|---|
| 255/40-14 | 0.00 % | 50.00 | 1,000.00 | 22.03 | 4.02 | 102.00 |
| 185/55-14 | -0.09 % | 49.96 | 1,000.89 | 22.01 | 4.01 | 101.75 |
| 205/50-14 | +0.18 % | 50.09 | 998.21 | 22.07 | 4.04 | 102.50 |
| 145/70-14 | -0.18 % | 49.91 | 1,001.79 | 21.99 | 4.00 | 101.50 |
| 225/45-14 | -0.27 % | 49.87 | 1,002.68 | 21.97 | 3.99 | 101.25 |
| 155/65-14 | -0.45 % | 49.78 | 1,004.47 | 21.93 | 3.97 | 100.75 |
| 295/35-14 | +0.45 % | 50.22 | 995.53 | 22.13 | 4.06 | 103.25 |
| 335/30-14 | -0.54 % | 49.73 | 1,005.36 | 21.91 | 3.96 | 100.50 |
| 285/35-14 | -0.80 % | 49.60 | 1,008.04 | 21.85 | 3.93 | 99.75 |
| 165/60-14 | -1.07 % | 49.46 | 1,010.72 | 21.80 | 3.90 | 99.00 |
| 175/60-14 | +1.07 % | 50.54 | 989.28 | 22.27 | 4.13 | 105.00 |
| 235/45-14 | +1.34 % | 50.67 | 986.60 | 22.33 | 4.16 | 105.75 |
| 245/40-14 | -1.43 % | 49.29 | 1,014.30 | 21.72 | 3.86 | 98.00 |
| 265/40-14 | +1.43 % | 50.71 | 985.70 | 22.35 | 4.17 | 106.00 |
| 325/30-14 | -1.61 % | 49.20 | 1,016.08 | 21.68 | 3.84 | 97.50 |
| 195/50-14 | -1.61 % | 49.20 | 1,016.08 | 21.68 | 3.84 | 97.50 |
| 305/35-14 | +1.70 % | 50.85 | 983.02 | 22.41 | 4.20 | 106.75 |
| 215/45-14 | -1.88 % | 49.06 | 1,018.76 | 21.62 | 3.81 | 96.75 |
| 195/55-14 | +1.88 % | 50.94 | 981.24 | 22.44 | 4.22 | 107.25 |
| 165/65-14 | +1.88 % | 50.94 | 981.24 | 22.44 | 4.22 | 107.25 |
| 215/50-14 | +1.97 % | 50.98 | 980.34 | 22.46 | 4.23 | 107.50 |
| Ratio: | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Wheel Size 12
|
|||||||||||||
|
Wheel Size 13
|
|||||||||||||
|
Wheel Size 14
|
|||||||||||||
| 145 |
145/25-14
d=16.85
w=1.43
-23.50%
|
145/30-14
d=17.43
w=1.71
-20.91%
|
145/35-14
d=18.00
w=2.00
-18.32%
|
145/40-14
d=18.57
w=2.28
-15.73%
|
145/45-14
d=19.14
w=2.57
-13.13%
|
145/50-14
d=19.71
w=2.85
-10.54%
|
145/55-14
d=20.28
w=3.14
-7.95%
|
145/60-14
d=20.85
w=3.43
-5.36%
|
145/65-14
d=21.42
w=3.71
-2.77%
|
145/70-14
d=21.99
w=4.00
-0.18%
|
145/75-14
d=22.56
w=4.28
+2.41%
|
145/80-14
d=23.13
w=4.57
+5.00%
|
145/85-14
d=23.70
w=4.85
+7.59%
|
| 155 |
155/25-14
d=17.05
w=1.53
-22.61%
|
155/30-14
d=17.66
w=1.83
-19.84%
|
155/35-14
d=18.27
w=2.14
-17.07%
|
155/40-14
d=18.88
w=2.44
-14.30%
|
155/45-14
d=19.49
w=2.75
-11.53%
|
155/50-14
d=20.10
w=3.05
-8.76%
|
155/55-14
d=20.71
w=3.36
-5.99%
|
155/60-14
d=21.32
w=3.66
-3.22%
|
155/65-14
d=21.93
w=3.97
-0.45%
|
155/70-14
d=22.54
w=4.27
+2.32%
|
155/75-14
d=23.15
w=4.58
+5.09%
|
155/80-14
d=23.76
w=4.88
+7.86%
|
155/85-14
d=24.37
w=5.19
+10.63%
|
| 165 |
165/25-14
d=17.25
w=1.62
-21.71%
|
165/30-14
d=17.90
w=1.95
-18.76%
|
165/35-14
d=18.55
w=2.27
-15.81%
|
165/40-14
d=19.20
w=2.60
-12.87%
|
165/45-14
d=19.85
w=2.92
-9.92%
|
165/50-14
d=20.50
w=3.25
-6.97%
|
165/55-14
d=21.15
w=3.57
-4.02%
|
165/60-14
d=21.80
w=3.90
-1.07%
|
165/65-14
d=22.44
w=4.22
+1.88%
|
165/70-14
d=23.09
w=4.55
+4.82%
|
165/75-14
d=23.74
w=4.87
+7.77%
|
165/80-14
d=24.39
w=5.20
+10.72%
|
165/85-14
d=25.04
w=5.52
+13.67%
|
| 175 |
175/25-14
d=17.44
w=1.72
-20.82%
|
175/30-14
d=18.13
w=2.07
-17.69%
|
175/35-14
d=18.82
w=2.41
-14.56%
|
175/40-14
d=19.51
w=2.76
-11.44%
|
175/45-14
d=20.20
w=3.10
-8.31%
|
175/50-14
d=20.89
w=3.44
-5.18%
|
175/55-14
d=21.58
w=3.79
-2.06%
|
175/60-14
d=22.27
w=4.13
+1.07%
|
175/65-14
d=22.96
w=4.48
+4.20%
|
175/70-14
d=23.65
w=4.82
+7.33%
|
175/75-14
d=24.33
w=5.17
+10.45%
|
175/80-14
d=25.02
w=5.51
+13.58%
|
175/85-14
d=25.71
w=5.86
+16.71%
|
| 185 |
185/25-14
d=17.64
w=1.82
-19.92%
|
185/30-14
d=18.37
w=2.19
-16.62%
|
185/35-14
d=19.10
w=2.55
-13.31%
|
185/40-14
d=19.83
w=2.91
-10.01%
|
185/45-14
d=20.56
w=3.28
-6.70%
|
185/50-14
d=21.28
w=3.64
-3.40%
|
185/55-14
d=22.01
w=4.01
-0.09%
|
185/60-14
d=22.74
w=4.37
+3.22%
|
185/65-14
d=23.47
w=4.73
+6.52%
|
185/70-14
d=24.20
w=5.10
+9.83%
|
185/75-14
d=24.93
w=5.46
+13.13%
|
185/80-14
d=25.65
w=5.83
+16.44%
|
185/85-14
d=26.38
w=6.19
+19.75%
|
| 195 |
195/25-14
d=17.84
w=1.92
-19.03%
|
195/30-14
d=18.61
w=2.30
-15.55%
|
195/35-14
d=19.37
w=2.69
-12.06%
|
195/40-14
d=20.14
w=3.07
-8.58%
|
195/45-14
d=20.91
w=3.45
-5.09%
|
195/50-14
d=21.68
w=3.84
-1.61%
|
195/55-14
d=22.44
w=4.22
+1.88%
|
195/60-14
d=23.21
w=4.61
+5.36%
|
195/65-14
d=23.98
w=4.99
+8.85%
|
195/70-14
d=24.75
w=5.37
+12.33%
|
195/75-14
d=25.52
w=5.76
+15.81%
|
195/80-14
d=26.28
w=6.14
+19.30%
|
195/85-14
d=27.05
w=6.53
+22.78%
|
| 205 |
205/25-14
d=18.04
w=2.02
-18.14%
|
205/30-14
d=18.84
w=2.42
-14.47%
|
205/35-14
d=19.65
w=2.82
-10.81%
|
205/40-14
d=20.46
w=3.23
-7.15%
|
205/45-14
d=21.26
w=3.63
-3.48%
|
205/50-14
d=22.07
w=4.04
+0.18%
|
205/55-14
d=22.88
w=4.44
+3.84%
|
205/60-14
d=23.69
w=4.84
+7.51%
|
205/65-14
d=24.49
w=5.25
+11.17%
|
205/70-14
d=25.30
w=5.65
+14.83%
|
205/75-14
d=26.11
w=6.05
+18.50%
|
205/80-14
d=26.91
w=6.46
+22.16%
|
205/85-14
d=27.72
w=6.86
+25.82%
|
| 215 |
215/25-14
d=18.23
w=2.12
-17.24%
|
215/30-14
d=19.08
w=2.54
-13.40%
|
215/35-14
d=19.93
w=2.96
-9.56%
|
215/40-14
d=20.77
w=3.39
-5.72%
|
215/45-14
d=21.62
w=3.81
-1.88%
|
215/50-14
d=22.46
w=4.23
+1.97%
|
215/55-14
d=23.31
w=4.66
+5.81%
|
215/60-14
d=24.16
w=5.08
+9.65%
|
215/65-14
d=25.00
w=5.50
+13.49%
|
215/70-14
d=25.85
w=5.93
+17.33%
|
215/75-14
d=26.70
w=6.35
+21.18%
|
215/80-14
d=27.54
w=6.77
+25.02%
|
215/85-14
d=28.39
w=7.19
+28.86%
|
| 225 |
225/25-14
d=18.43
w=2.21
-16.35%
|
225/30-14
d=19.31
w=2.66
-12.33%
|
225/35-14
d=20.20
w=3.10
-8.31%
|
225/40-14
d=21.09
w=3.54
-4.29%
|
225/45-14
d=21.97
w=3.99
-0.27%
|
225/50-14
d=22.86
w=4.43
+3.75%
|
225/55-14
d=23.74
w=4.87
+7.77%
|
225/60-14
d=24.63
w=5.31
+11.79%
|
225/65-14
d=25.52
w=5.76
+15.81%
|
225/70-14
d=26.40
w=6.20
+19.84%
|
225/75-14
d=27.29
w=6.64
+23.86%
|
225/80-14
d=28.17
w=7.09
+27.88%
|
225/85-14
d=29.06
w=7.53
+31.90%
|
| 235 |
235/25-14
d=18.63
w=2.31
-15.46%
|
235/30-14
d=19.55
w=2.78
-11.26%
|
235/35-14
d=20.48
w=3.24
-7.06%
|
235/40-14
d=21.40
w=3.70
-2.86%
|
235/45-14
d=22.33
w=4.16
+1.34%
|
235/50-14
d=23.25
w=4.63
+5.54%
|
235/55-14
d=24.18
w=5.09
+9.74%
|
235/60-14
d=25.10
w=5.55
+13.94%
|
235/65-14
d=26.03
w=6.01
+18.14%
|
235/70-14
d=26.95
w=6.48
+22.34%
|
235/75-14
d=27.88
w=6.94
+26.54%
|
235/80-14
d=28.80
w=7.40
+30.74%
|
235/85-14
d=29.73
w=7.86
+34.94%
|
| 245 |
245/25-14
d=18.82
w=2.41
-14.56%
|
245/30-14
d=19.79
w=2.89
-10.19%
|
245/35-14
d=20.75
w=3.38
-5.81%
|
245/40-14
d=21.72
w=3.86
-1.43%
|
245/45-14
d=22.68
w=4.34
+2.95%
|
245/50-14
d=23.65
w=4.82
+7.33%
|
245/55-14
d=24.61
w=5.31
+11.70%
|
245/60-14
d=25.57
w=5.79
+16.08%
|
245/65-14
d=26.54
w=6.27
+20.46%
|
245/70-14
d=27.50
w=6.75
+24.84%
|
245/75-14
d=28.47
w=7.23
+29.22%
|
245/80-14
d=29.43
w=7.72
+33.60%
|
245/85-14
d=30.40
w=8.20
+37.97%
|
| 255 |
255/25-14
d=19.02
w=2.51
-13.67%
|
255/30-14
d=20.02
w=3.01
-9.11%
|
255/35-14
d=21.03
w=3.51
-4.56%
|
255/40-14
d=22.03
w=4.02
0.00%
|
255/45-14
d=23.04
w=4.52
+4.56%
|
255/50-14
d=24.04
w=5.02
+9.11%
|
255/55-14
d=25.04
w=5.52
+13.67%
|
255/60-14
d=26.05
w=6.02
+18.23%
|
255/65-14
d=27.05
w=6.53
+22.78%
|
255/70-14
d=28.06
w=7.03
+27.34%
|
255/75-14
d=29.06
w=7.53
+31.90%
|
255/80-14
d=30.06
w=8.03
+36.45%
|
255/85-14
d=31.07
w=8.53
+41.01%
|
| 265 |
265/25-14
d=19.22
w=2.61
-12.78%
|
265/30-14
d=20.26
w=3.13
-8.04%
|
265/35-14
d=21.30
w=3.65
-3.31%
|
265/40-14
d=22.35
w=4.17
+1.43%
|
265/45-14
d=23.39
w=4.69
+6.17%
|
265/50-14
d=24.43
w=5.22
+10.90%
|
265/55-14
d=25.48
w=5.74
+15.64%
|
265/60-14
d=26.52
w=6.26
+20.37%
|
265/65-14
d=27.56
w=6.78
+25.11%
|
265/70-14
d=28.61
w=7.30
+29.84%
|
265/75-14
d=29.65
w=7.82
+34.58%
|
265/80-14
d=30.69
w=8.35
+39.31%
|
265/85-14
d=31.74
w=8.87
+44.05%
|
| 275 |
275/25-14
d=19.41
w=2.71
-11.88%
|
275/30-14
d=20.50
w=3.25
-6.97%
|
275/35-14
d=21.58
w=3.79
-2.06%
|
275/40-14
d=22.66
w=4.33
+2.86%
|
275/45-14
d=23.74
w=4.87
+7.77%
|
275/50-14
d=24.83
w=5.41
+12.69%
|
275/55-14
d=25.91
w=5.95
+17.60%
|
275/60-14
d=26.99
w=6.50
+22.52%
|
275/65-14
d=28.07
w=7.04
+27.43%
|
275/70-14
d=29.16
w=7.58
+32.34%
|
275/75-14
d=30.24
w=8.12
+37.26%
|
275/80-14
d=31.32
w=8.66
+42.17%
|
275/85-14
d=32.41
w=9.20
+47.09%
|
| 285 |
285/25-14
d=19.61
w=2.81
-10.99%
|
285/30-14
d=20.73
w=3.37
-5.90%
|
285/35-14
d=21.85
w=3.93
-0.80%
|
285/40-14
d=22.98
w=4.49
+4.29%
|
285/45-14
d=24.10
w=5.05
+9.38%
|
285/50-14
d=25.22
w=5.61
+14.47%
|
285/55-14
d=26.34
w=6.17
+19.57%
|
285/60-14
d=27.46
w=6.73
+24.66%
|
285/65-14
d=28.59
w=7.29
+29.75%
|
285/70-14
d=29.71
w=7.85
+34.85%
|
285/75-14
d=30.83
w=8.42
+39.94%
|
285/80-14
d=31.95
w=8.98
+45.03%
|
285/85-14
d=33.07
w=9.54
+50.13%
|
| 295 |
295/25-14
d=19.81
w=2.90
-10.10%
|
295/30-14
d=20.97
w=3.48
-4.82%
|
295/35-14
d=22.13
w=4.06
+0.45%
|
295/40-14
d=23.29
w=4.65
+5.72%
|
295/45-14
d=24.45
w=5.23
+10.99%
|
295/50-14
d=25.61
w=5.81
+16.26%
|
295/55-14
d=26.78
w=6.39
+21.53%
|
295/60-14
d=27.94
w=6.97
+26.80%
|
295/65-14
d=29.10
w=7.55
+32.08%
|
295/70-14
d=30.26
w=8.13
+37.35%
|
295/75-14
d=31.42
w=8.71
+42.62%
|
295/80-14
d=32.58
w=9.29
+47.89%
|
295/85-14
d=33.74
w=9.87
+53.16%
|
| 305 |
305/25-14
d=20.00
w=3.00
-9.20%
|
305/30-14
d=21.20
w=3.60
-3.75%
|
305/35-14
d=22.41
w=4.20
+1.70%
|
305/40-14
d=23.61
w=4.80
+7.15%
|
305/45-14
d=24.81
w=5.40
+12.60%
|
305/50-14
d=26.01
w=6.00
+18.05%
|
305/55-14
d=27.21
w=6.60
+23.50%
|
305/60-14
d=28.41
w=7.20
+28.95%
|
305/65-14
d=29.61
w=7.81
+34.40%
|
305/70-14
d=30.81
w=8.41
+39.85%
|
305/75-14
d=32.01
w=9.01
+45.30%
|
305/80-14
d=33.21
w=9.61
+50.75%
|
305/85-14
d=34.41
w=10.21
+56.20%
|
| 315 |
315/25-14
d=20.20
w=3.10
-8.31%
|
315/30-14
d=21.44
w=3.72
-2.68%
|
315/35-14
d=22.68
w=4.34
+2.95%
|
315/40-14
d=23.92
w=4.96
+8.58%
|
315/45-14
d=25.16
w=5.58
+14.21%
|
315/50-14
d=26.40
w=6.20
+19.84%
|
315/55-14
d=27.64
w=6.82
+25.46%
|
315/60-14
d=28.88
w=7.44
+31.09%
|
315/65-14
d=30.12
w=8.06
+36.72%
|
315/70-14
d=31.36
w=8.68
+42.35%
|
315/75-14
d=32.60
w=9.30
+47.98%
|
315/80-14
d=33.84
w=9.92
+53.61%
|
315/85-14
d=35.08
w=10.54
+59.24%
|
| 325 |
325/25-14
d=20.40
w=3.20
-7.42%
|
325/30-14
d=21.68
w=3.84
-1.61%
|
325/35-14
d=22.96
w=4.48
+4.20%
|
325/40-14
d=24.24
w=5.12
+10.01%
|
325/45-14
d=25.52
w=5.76
+15.81%
|
325/50-14
d=26.80
w=6.40
+21.62%
|
325/55-14
d=28.07
w=7.04
+27.43%
|
325/60-14
d=29.35
w=7.68
+33.24%
|
325/65-14
d=30.63
w=8.32
+39.05%
|
325/70-14
d=31.91
w=8.96
+44.85%
|
325/75-14
d=33.19
w=9.60
+50.66%
|
325/80-14
d=34.47
w=10.24
+56.47%
|
325/85-14
d=35.75
w=10.88
+62.28%
|
| 335 |
335/25-14
d=20.59
w=3.30
-6.52%
|
335/30-14
d=21.91
w=3.96
-0.54%
|
335/35-14
d=23.23
w=4.62
+5.45%
|
335/40-14
d=24.55
w=5.28
+11.44%
|
335/45-14
d=25.87
w=5.94
+17.42%
|
335/50-14
d=27.19
w=6.59
+23.41%
|
335/55-14
d=28.51
w=7.25
+29.40%
|
335/60-14
d=29.83
w=7.91
+35.38%
|
335/65-14
d=31.15
w=8.57
+41.37%
|
335/70-14
d=32.46
w=9.23
+47.36%
|
335/75-14
d=33.78
w=9.89
+53.34%
|
335/80-14
d=35.10
w=10.55
+59.33%
|
335/85-14
d=36.42
w=11.21
+65.31%
|
|
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!