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 |
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 |
195/45-17 | +0.71 % | 50.36 | 992.87 | 23.91 | 3.45 | 87.75 |
185/75-13 | +0.78 % | 50.39 | 992.21 | 23.93 | 5.46 | 138.75 |
185/45-17 | -0.78 % | 49.61 | 1,007.79 | 23.56 | 3.28 | 83.25 |
205/65-13 | -1.04 % | 49.48 | 1,010.45 | 23.49 | 5.25 | 133.25 |
205/40-17 | -1.19 % | 49.40 | 1,011.94 | 23.46 | 3.23 | 82.00 |
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 |
185/30-19 | -1.56 % | 49.22 | 1,015.59 | 23.37 | 2.19 | 55.50 |
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
|
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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
|
|||||||||||||
Wheel Size 16.5
|
|||||||||||||
Wheel Size 17
|
|||||||||||||
185 |
185/25-17
d=20.64
w=1.82
-13.05%
|
185/30-17
d=21.37
w=2.19
-9.98%
|
185/35-17
d=22.10
w=2.55
-6.92%
|
185/40-17
d=22.83
w=2.91
-3.85%
|
185/45-17
d=23.56
w=3.28
-0.78%
|
185/50-17
d=24.28
w=3.64
+2.29%
|
185/55-17
d=25.01
w=4.01
+5.36%
|
185/60-17
d=25.74
w=4.37
+8.42%
|
185/65-17
d=26.47
w=4.73
+11.49%
|
185/70-17
d=27.20
w=5.10
+14.56%
|
185/75-17
d=27.93
w=5.46
+17.63%
|
185/80-17
d=28.65
w=5.83
+20.70%
|
185/85-17
d=29.38
w=6.19
+23.76%
|
195 |
195/25-17
d=20.84
w=1.92
-12.22%
|
195/30-17
d=21.61
w=2.30
-8.99%
|
195/35-17
d=22.37
w=2.69
-5.75%
|
195/40-17
d=23.14
w=3.07
-2.52%
|
195/45-17
d=23.91
w=3.45
+0.71%
|
195/50-17
d=24.68
w=3.84
+3.95%
|
195/55-17
d=25.44
w=4.22
+7.18%
|
195/60-17
d=26.21
w=4.61
+10.41%
|
195/65-17
d=26.98
w=4.99
+13.65%
|
195/70-17
d=27.75
w=5.37
+16.88%
|
195/75-17
d=28.52
w=5.76
+20.12%
|
195/80-17
d=29.28
w=6.14
+23.35%
|
195/85-17
d=30.05
w=6.53
+26.58%
|
205 |
205/25-17
d=21.04
w=2.02
-11.39%
|
205/30-17
d=21.84
w=2.42
-7.99%
|
205/35-17
d=22.65
w=2.82
-4.59%
|
205/40-17
d=23.46
w=3.23
-1.19%
|
205/45-17
d=24.26
w=3.63
+2.21%
|
205/50-17
d=25.07
w=4.04
+5.61%
|
205/55-17
d=25.88
w=4.44
+9.00%
|
205/60-17
d=26.69
w=4.84
+12.40%
|
205/65-17
d=27.49
w=5.25
+15.80%
|
205/70-17
d=28.30
w=5.65
+19.20%
|
205/75-17
d=29.11
w=6.05
+22.60%
|
205/80-17
d=29.91
w=6.46
+26.00%
|
205/85-17
d=30.72
w=6.86
+29.40%
|
Wheel Size 18
|
|||||||||||||
Wheel Size 19
|
|||||||||||||
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
|
|||||||||||||
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!