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 |
185/80-12 | -0.36 % | 49.82 | 1,003.65 | 23.65 | 5.83 | 148.00 |
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 |
195/75-12 | -0.95 % | 49.53 | 1,009.45 | 23.52 | 5.76 | 146.25 |
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 |
205/75-12 | +1.54 % | 50.77 | 984.58 | 24.11 | 6.05 | 153.75 |
205/70-12 | -1.86 % | 49.07 | 1,018.57 | 23.30 | 5.65 | 143.50 |
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
|
|||||||||||||
185 |
185/25-12
d=15.64
w=1.82
-34.11%
|
185/30-12
d=16.37
w=2.19
-31.04%
|
185/35-12
d=17.10
w=2.55
-27.98%
|
185/40-12
d=17.83
w=2.91
-24.91%
|
185/45-12
d=18.56
w=3.28
-21.84%
|
185/50-12
d=19.28
w=3.64
-18.77%
|
185/55-12
d=20.01
w=4.01
-15.70%
|
185/60-12
d=20.74
w=4.37
-12.64%
|
185/65-12
d=21.47
w=4.73
-9.57%
|
185/70-12
d=22.20
w=5.10
-6.50%
|
185/75-12
d=22.93
w=5.46
-3.43%
|
185/80-12
d=23.65
w=5.83
-0.36%
|
185/85-12
d=24.38
w=6.19
+2.70%
|
195 |
195/25-12
d=15.84
w=1.92
-33.28%
|
195/30-12
d=16.61
w=2.30
-30.05%
|
195/35-12
d=17.37
w=2.69
-26.82%
|
195/40-12
d=18.14
w=3.07
-23.58%
|
195/45-12
d=18.91
w=3.45
-20.35%
|
195/50-12
d=19.68
w=3.84
-17.11%
|
195/55-12
d=20.44
w=4.22
-13.88%
|
195/60-12
d=21.21
w=4.61
-10.65%
|
195/65-12
d=21.98
w=4.99
-7.41%
|
195/70-12
d=22.75
w=5.37
-4.18%
|
195/75-12
d=23.52
w=5.76
-0.95%
|
195/80-12
d=24.28
w=6.14
+2.29%
|
195/85-12
d=25.05
w=6.53
+5.52%
|
205 |
205/25-12
d=16.04
w=2.02
-32.45%
|
205/30-12
d=16.84
w=2.42
-29.05%
|
205/35-12
d=17.65
w=2.82
-25.66%
|
205/40-12
d=18.46
w=3.23
-22.26%
|
205/45-12
d=19.26
w=3.63
-18.86%
|
205/50-12
d=20.07
w=4.04
-15.46%
|
205/55-12
d=20.88
w=4.44
-12.06%
|
205/60-12
d=21.69
w=4.84
-8.66%
|
205/65-12
d=22.49
w=5.25
-5.26%
|
205/70-12
d=23.30
w=5.65
-1.86%
|
205/75-12
d=24.11
w=6.05
+1.54%
|
205/80-12
d=24.91
w=6.46
+4.94%
|
205/85-12
d=25.72
w=6.86
+8.34%
|
Wheel Size 13
|
|||||||||||||
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
|
|||||||||||||
Wheel Size 15
|
|||||||||||||
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
|
|||||||||||||
Wheel Size 18
|
|||||||||||||
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!