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 |
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 |
205/30-19 | +0.43 % | 50.22 | 995.69 | 23.84 | 2.42 | 61.50 |
195/30-19 | -0.56 % | 49.72 | 1,005.64 | 23.61 | 2.30 | 58.50 |
205/55-15 | +0.58 % | 50.29 | 994.20 | 23.88 | 4.44 | 112.75 |
195/55-15 | -1.24 % | 49.38 | 1,012.44 | 23.44 | 4.22 | 107.25 |
185/35-19 | +1.51 % | 50.75 | 984.91 | 24.10 | 2.55 | 64.75 |
195/35-18 | -1.54 % | 49.23 | 1,015.42 | 23.37 | 2.69 | 68.25 |
185/30-19 | -1.56 % | 49.22 | 1,015.59 | 23.37 | 2.19 | 55.50 |
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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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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185 |
185/25-19
d=22.64
w=1.82
-4.63%
|
185/30-19
d=23.37
w=2.19
-1.56%
|
185/35-19
d=24.10
w=2.55
+1.51%
|
185/40-19
d=24.83
w=2.91
+4.58%
|
185/45-19
d=25.56
w=3.28
+7.65%
|
185/50-19
d=26.28
w=3.64
+10.71%
|
185/55-19
d=27.01
w=4.01
+13.78%
|
185/60-19
d=27.74
w=4.37
+16.85%
|
185/65-19
d=28.47
w=4.73
+19.92%
|
185/70-19
d=29.20
w=5.10
+22.99%
|
185/75-19
d=29.93
w=5.46
+26.05%
|
185/80-19
d=30.65
w=5.83
+29.12%
|
185/85-19
d=31.38
w=6.19
+32.19%
|
195 |
195/25-19
d=22.84
w=1.92
-3.80%
|
195/30-19
d=23.61
w=2.30
-0.56%
|
195/35-19
d=24.37
w=2.69
+2.67%
|
195/40-19
d=25.14
w=3.07
+5.90%
|
195/45-19
d=25.91
w=3.45
+9.14%
|
195/50-19
d=26.68
w=3.84
+12.37%
|
195/55-19
d=27.44
w=4.22
+15.61%
|
195/60-19
d=28.21
w=4.61
+18.84%
|
195/65-19
d=28.98
w=4.99
+22.07%
|
195/70-19
d=29.75
w=5.37
+25.31%
|
195/75-19
d=30.52
w=5.76
+28.54%
|
195/80-19
d=31.28
w=6.14
+31.77%
|
195/85-19
d=32.05
w=6.53
+35.01%
|
205 |
205/25-19
d=23.04
w=2.02
-2.97%
|
205/30-19
d=23.84
w=2.42
+0.43%
|
205/35-19
d=24.65
w=2.82
+3.83%
|
205/40-19
d=25.46
w=3.23
+7.23%
|
205/45-19
d=26.26
w=3.63
+10.63%
|
205/50-19
d=27.07
w=4.04
+14.03%
|
205/55-19
d=27.88
w=4.44
+17.43%
|
205/60-19
d=28.69
w=4.84
+20.83%
|
205/65-19
d=29.49
w=5.25
+24.23%
|
205/70-19
d=30.30
w=5.65
+27.63%
|
205/75-19
d=31.11
w=6.05
+31.03%
|
205/80-19
d=31.91
w=6.46
+34.43%
|
205/85-19
d=32.72
w=6.86
+37.83%
|
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!