Code | Difference | = 50mph | 1000miles = | Diameter | Wall,in | Wall,mm |
---|---|---|---|---|---|---|
185/60-15 | 0.00 % | 50.00 | 1,000.00 | 23.74 | 4.37 | 111.00 |
195/70-13 | +0.03 % | 50.02 | 999.67 | 23.75 | 5.37 | 136.50 |
185/40-18 | +0.36 % | 50.18 | 996.35 | 23.83 | 2.91 | 74.00 |
205/35-18 | -0.38 % | 49.81 | 1,003.81 | 23.65 | 2.82 | 71.75 |
205/55-15 | +0.58 % | 50.29 | 994.20 | 23.88 | 4.44 | 112.75 |
185/75-13 | +0.78 % | 50.39 | 992.21 | 23.93 | 5.46 | 138.75 |
205/65-13 | -1.04 % | 49.48 | 1,010.45 | 23.49 | 5.25 | 133.25 |
195/55-15 | -1.24 % | 49.38 | 1,012.44 | 23.44 | 4.22 | 107.25 |
195/35-18 | -1.54 % | 49.23 | 1,015.42 | 23.37 | 2.69 | 68.25 |
195/40-18 | +1.69 % | 50.85 | 983.08 | 24.14 | 3.07 | 78.00 |
195/60-15 | +1.99 % | 51.00 | 980.10 | 24.21 | 4.61 | 117.00 |
Ratio: | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Wheel Size 12
|
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Wheel Size 13
|
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185 |
185/25-13
d=16.64
w=1.82
-29.90%
|
185/30-13
d=17.37
w=2.19
-26.83%
|
185/35-13
d=18.10
w=2.55
-23.76%
|
185/40-13
d=18.83
w=2.91
-20.70%
|
185/45-13
d=19.56
w=3.28
-17.63%
|
185/50-13
d=20.28
w=3.64
-14.56%
|
185/55-13
d=21.01
w=4.01
-11.49%
|
185/60-13
d=21.74
w=4.37
-8.42%
|
185/65-13
d=22.47
w=4.73
-5.36%
|
185/70-13
d=23.20
w=5.10
-2.29%
|
185/75-13
d=23.93
w=5.46
+0.78%
|
185/80-13
d=24.65
w=5.83
+3.85%
|
185/85-13
d=25.38
w=6.19
+6.92%
|
195 |
195/25-13
d=16.84
w=1.92
-29.07%
|
195/30-13
d=17.61
w=2.30
-25.84%
|
195/35-13
d=18.37
w=2.69
-22.60%
|
195/40-13
d=19.14
w=3.07
-19.37%
|
195/45-13
d=19.91
w=3.45
-16.14%
|
195/50-13
d=20.68
w=3.84
-12.90%
|
195/55-13
d=21.44
w=4.22
-9.67%
|
195/60-13
d=22.21
w=4.61
-6.43%
|
195/65-13
d=22.98
w=4.99
-3.20%
|
195/70-13
d=23.75
w=5.37
+0.03%
|
195/75-13
d=24.52
w=5.76
+3.27%
|
195/80-13
d=25.28
w=6.14
+6.50%
|
195/85-13
d=26.05
w=6.53
+9.73%
|
205 |
205/25-13
d=17.04
w=2.02
-28.24%
|
205/30-13
d=17.84
w=2.42
-24.84%
|
205/35-13
d=18.65
w=2.82
-21.44%
|
205/40-13
d=19.46
w=3.23
-18.04%
|
205/45-13
d=20.26
w=3.63
-14.64%
|
205/50-13
d=21.07
w=4.04
-11.24%
|
205/55-13
d=21.88
w=4.44
-7.84%
|
205/60-13
d=22.69
w=4.84
-4.44%
|
205/65-13
d=23.49
w=5.25
-1.04%
|
205/70-13
d=24.30
w=5.65
+2.35%
|
205/75-13
d=25.11
w=6.05
+5.75%
|
205/80-13
d=25.91
w=6.46
+9.15%
|
205/85-13
d=26.72
w=6.86
+12.55%
|
Wheel Size 14
|
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Wheel Size 15
|
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185 |
185/25-15
d=18.64
w=1.82
-21.48%
|
185/30-15
d=19.37
w=2.19
-18.41%
|
185/35-15
d=20.10
w=2.55
-15.34%
|
185/40-15
d=20.83
w=2.91
-12.27%
|
185/45-15
d=21.56
w=3.28
-9.20%
|
185/50-15
d=22.28
w=3.64
-6.14%
|
185/55-15
d=23.01
w=4.01
-3.07%
|
185/60-15
d=23.74
w=4.37
0.00%
|
185/65-15
d=24.47
w=4.73
+3.07%
|
185/70-15
d=25.20
w=5.10
+6.14%
|
185/75-15
d=25.93
w=5.46
+9.20%
|
185/80-15
d=26.65
w=5.83
+12.27%
|
185/85-15
d=27.38
w=6.19
+15.34%
|
195 |
195/25-15
d=18.84
w=1.92
-20.65%
|
195/30-15
d=19.61
w=2.30
-17.41%
|
195/35-15
d=20.37
w=2.69
-14.18%
|
195/40-15
d=21.14
w=3.07
-10.95%
|
195/45-15
d=21.91
w=3.45
-7.71%
|
195/50-15
d=22.68
w=3.84
-4.48%
|
195/55-15
d=23.44
w=4.22
-1.24%
|
195/60-15
d=24.21
w=4.61
+1.99%
|
195/65-15
d=24.98
w=4.99
+5.22%
|
195/70-15
d=25.75
w=5.37
+8.46%
|
195/75-15
d=26.52
w=5.76
+11.69%
|
195/80-15
d=27.28
w=6.14
+14.93%
|
195/85-15
d=28.05
w=6.53
+18.16%
|
205 |
205/25-15
d=19.04
w=2.02
-19.82%
|
205/30-15
d=19.84
w=2.42
-16.42%
|
205/35-15
d=20.65
w=2.82
-13.02%
|
205/40-15
d=21.46
w=3.23
-9.62%
|
205/45-15
d=22.26
w=3.63
-6.22%
|
205/50-15
d=23.07
w=4.04
-2.82%
|
205/55-15
d=23.88
w=4.44
+0.58%
|
205/60-15
d=24.69
w=4.84
+3.98%
|
205/65-15
d=25.49
w=5.25
+7.38%
|
205/70-15
d=26.30
w=5.65
+10.78%
|
205/75-15
d=27.11
w=6.05
+14.18%
|
205/80-15
d=27.91
w=6.46
+17.58%
|
205/85-15
d=28.72
w=6.86
+20.98%
|
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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185 |
185/25-18
d=21.64
w=1.82
-8.84%
|
185/30-18
d=22.37
w=2.19
-5.77%
|
185/35-18
d=23.10
w=2.55
-2.70%
|
185/40-18
d=23.83
w=2.91
+0.36%
|
185/45-18
d=24.56
w=3.28
+3.43%
|
185/50-18
d=25.28
w=3.64
+6.50%
|
185/55-18
d=26.01
w=4.01
+9.57%
|
185/60-18
d=26.74
w=4.37
+12.64%
|
185/65-18
d=27.47
w=4.73
+15.70%
|
185/70-18
d=28.20
w=5.10
+18.77%
|
185/75-18
d=28.93
w=5.46
+21.84%
|
185/80-18
d=29.65
w=5.83
+24.91%
|
185/85-18
d=30.38
w=6.19
+27.98%
|
195 |
195/25-18
d=21.84
w=1.92
-8.01%
|
195/30-18
d=22.61
w=2.30
-4.78%
|
195/35-18
d=23.37
w=2.69
-1.54%
|
195/40-18
d=24.14
w=3.07
+1.69%
|
195/45-18
d=24.91
w=3.45
+4.93%
|
195/50-18
d=25.68
w=3.84
+8.16%
|
195/55-18
d=26.44
w=4.22
+11.39%
|
195/60-18
d=27.21
w=4.61
+14.63%
|
195/65-18
d=27.98
w=4.99
+17.86%
|
195/70-18
d=28.75
w=5.37
+21.09%
|
195/75-18
d=29.52
w=5.76
+24.33%
|
195/80-18
d=30.28
w=6.14
+27.56%
|
195/85-18
d=31.05
w=6.53
+30.80%
|
205 |
205/25-18
d=22.04
w=2.02
-7.18%
|
205/30-18
d=22.84
w=2.42
-3.78%
|
205/35-18
d=23.65
w=2.82
-0.38%
|
205/40-18
d=24.46
w=3.23
+3.02%
|
205/45-18
d=25.26
w=3.63
+6.42%
|
205/50-18
d=26.07
w=4.04
+9.82%
|
205/55-18
d=26.88
w=4.44
+13.22%
|
205/60-18
d=27.69
w=4.84
+16.62%
|
205/65-18
d=28.49
w=5.25
+20.02%
|
205/70-18
d=29.30
w=5.65
+23.42%
|
205/75-18
d=30.11
w=6.05
+26.82%
|
205/80-18
d=30.91
w=6.46
+30.22%
|
205/85-18
d=31.72
w=6.86
+33.62%
|
Wheel Size 19
|
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Wheel Size 20
|
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Wheel Size 21
|
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!