Accepts P-Metric and Inches
285/55-18 | 305/60-18 | Difference | |
---|---|---|---|
Diameter inches (mm) | 30.34 (770.7) | 32.41 (823.2) | 2.07 (52.5) 6.8% |
Width inches (mm) | 11.22 (285) | 12.01 (305) | 0.79 (20) 7% |
Circum. inches (mm) | 95.32 (2421.23) | 101.82 (2586.16) | 6.49 (164.93) 6.8% |
Sidewall Height inches (mm) | 6.17 (156.75) | 7.2 (183) | 1.03 (26.25) 16.7% |
Revolutions per mile (km) | 664.68 (413.01) | 622.29 (386.67) | -42.39 (-26.34) -6.4% |
305/60-18 Tires
Speedometer Difference
Speedo Reading | Actual Speed |
---|---|
20 mph (32.19 km/h) | 21.36 mph (34.38 km/h) |
25 mph (40.23 km/h) | 26.7 mph (42.97 km/h) |
30 mph (48.28 km/h) | 32.04 mph (51.57 km/h) |
35 mph (56.33 km/h) | 37.38 mph (60.16 km/h) |
40 mph (64.37 km/h) | 42.72 mph (68.76 km/h) |
45 mph (72.42 km/h) | 48.07 mph (77.35 km/h) |
50 mph (80.47 km/h) | 53.41 mph (85.95 km/h) |
55 mph (88.51 km/h) | 58.75 mph (94.54 km/h) |
60 mph (96.56 km/h) | 64.09 mph (103.14 km/h) |
65 mph (104.61 km/h) | 69.43 mph (111.73 km/h) |
70 mph (112.65 km/h) | 74.77 mph (120.33 km/h) |
75 mph (120.7 km/h) | 80.11 mph (128.92 km/h) |
80 mph (128.75 km/h) | 85.45 mph (137.52 km/h) |
85 mph (136.79 km/h) | 90.79 mph (146.11 km/h) |
90 mph (144.84 km/h) | 96.13 mph (154.71 km/h) |
95 mph (152.89 km/h) | 101.47 mph (163.3 km/h) |
100 mph (160.93 km/h) | 106.81 mph (171.9 km/h) |
2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1584 | 1840 | 1981 | 2069 | 2163 | 2231 | 2305 | 2392 | 2514 | 2635 | 2770 | 2877 | 3073 | 3289 | 3457 | 3565 | 3625 | 3848 | 4158 | 4832 |
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