Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/60-18 | 285/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.41 (823.2) | 31.46 (799.2) | -0.94 (-24) -2.9% |
| Width inches (mm) | 12.01 (305) | 11.22 (285) | -0.79 (-20) -6.6% |
| Circum. inches (mm) | 101.82 (2586.16) | 98.85 (2510.76) | -2.97 (-75.4) -2.9% |
| Sidewall Height inches (mm) | 7.2 (183) | 6.73 (171) | -0.47 (-12) -6.6% |
| Revolutions per mile (km) | 622.29 (386.67) | 640.98 (398.28) | 18.69 (11.61) 3% |
285/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.42 mph (31.25 km/h) |
| 25 mph (40.23 km/h) | 24.27 mph (39.06 km/h) |
| 30 mph (48.28 km/h) | 29.13 mph (46.87 km/h) |
| 35 mph (56.33 km/h) | 33.98 mph (54.68 km/h) |
| 40 mph (64.37 km/h) | 38.83 mph (62.5 km/h) |
| 45 mph (72.42 km/h) | 43.69 mph (70.31 km/h) |
| 50 mph (80.47 km/h) | 48.54 mph (78.12 km/h) |
| 55 mph (88.51 km/h) | 53.4 mph (85.93 km/h) |
| 60 mph (96.56 km/h) | 58.25 mph (93.75 km/h) |
| 65 mph (104.61 km/h) | 63.1 mph (101.56 km/h) |
| 70 mph (112.65 km/h) | 67.96 mph (109.37 km/h) |
| 75 mph (120.7 km/h) | 72.81 mph (117.18 km/h) |
| 80 mph (128.75 km/h) | 77.67 mph (124.99 km/h) |
| 85 mph (136.79 km/h) | 82.52 mph (132.81 km/h) |
| 90 mph (144.84 km/h) | 87.38 mph (140.62 km/h) |
| 95 mph (152.89 km/h) | 92.23 mph (148.43 km/h) |
| 100 mph (160.93 km/h) | 97.08 mph (156.24 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1631 | 1895 | 2041 | 2131 | 2228 | 2298 | 2374 | 2464 | 2589 | 2714 | 2853 | 2964 | 3165 | 3387 | 3561 | 3672 | 3734 | 3963 | 4283 | 4977 |
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