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 |
195/50-16 | -0.27 % | 49.87 | 1,002.65 | 23.68 | 3.84 | 97.50 |
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 |
195/75-12 | -0.95 % | 49.53 | 1,009.45 | 23.52 | 5.76 | 146.25 |
185/55-16 | +1.14 % | 50.57 | 988.56 | 24.01 | 4.01 | 101.75 |
195/55-15 | -1.24 % | 49.38 | 1,012.44 | 23.44 | 4.22 | 107.25 |
205/50-16 | +1.39 % | 50.70 | 986.07 | 24.07 | 4.04 | 102.50 |
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 |
185/50-16 | -1.92 % | 49.04 | 1,019.24 | 23.28 | 3.64 | 92.50 |
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
|
|||||||||||||
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
|
|||||||||||||
185 |
185/25-16
d=19.64
w=1.82
-17.26%
|
185/30-16
d=20.37
w=2.19
-14.20%
|
185/35-16
d=21.10
w=2.55
-11.13%
|
185/40-16
d=21.83
w=2.91
-8.06%
|
185/45-16
d=22.56
w=3.28
-4.99%
|
185/50-16
d=23.28
w=3.64
-1.92%
|
185/55-16
d=24.01
w=4.01
+1.14%
|
185/60-16
d=24.74
w=4.37
+4.21%
|
185/65-16
d=25.47
w=4.73
+7.28%
|
185/70-16
d=26.20
w=5.10
+10.35%
|
185/75-16
d=26.93
w=5.46
+13.42%
|
185/80-16
d=27.65
w=5.83
+16.48%
|
185/85-16
d=28.38
w=6.19
+19.55%
|
195 |
195/25-16
d=19.84
w=1.92
-16.43%
|
195/30-16
d=20.61
w=2.30
-13.20%
|
195/35-16
d=21.37
w=2.69
-9.97%
|
195/40-16
d=22.14
w=3.07
-6.73%
|
195/45-16
d=22.91
w=3.45
-3.50%
|
195/50-16
d=23.68
w=3.84
-0.27%
|
195/55-16
d=24.44
w=4.22
+2.97%
|
195/60-16
d=25.21
w=4.61
+6.20%
|
195/65-16
d=25.98
w=4.99
+9.44%
|
195/70-16
d=26.75
w=5.37
+12.67%
|
195/75-16
d=27.52
w=5.76
+15.90%
|
195/80-16
d=28.28
w=6.14
+19.14%
|
195/85-16
d=29.05
w=6.53
+22.37%
|
205 |
205/25-16
d=20.04
w=2.02
-15.61%
|
205/30-16
d=20.84
w=2.42
-12.21%
|
205/35-16
d=21.65
w=2.82
-8.81%
|
205/40-16
d=22.46
w=3.23
-5.41%
|
205/45-16
d=23.26
w=3.63
-2.01%
|
205/50-16
d=24.07
w=4.04
+1.39%
|
205/55-16
d=24.88
w=4.44
+4.79%
|
205/60-16
d=25.69
w=4.84
+8.19%
|
205/65-16
d=26.49
w=5.25
+11.59%
|
205/70-16
d=27.30
w=5.65
+14.99%
|
205/75-16
d=28.11
w=6.05
+18.39%
|
205/80-16
d=28.91
w=6.46
+21.79%
|
205/85-16
d=29.72
w=6.86
+25.19%
|
Wheel Size 16.5
|
|||||||||||||
Wheel Size 17
|
|||||||||||||
Wheel Size 18
|
|||||||||||||
Wheel Size 19
|
|||||||||||||
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!