Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/70-18 | 285/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.06 (814.2) | 31.46 (799.2) | -0.59 (-15) -1.8% |
| Width inches (mm) | 10.04 (255) | 11.22 (285) | 1.18 (30) 11.8% |
| Circum. inches (mm) | 100.7 (2557.88) | 98.85 (2510.76) | -1.86 (-47.12) -1.8% |
| Sidewall Height inches (mm) | 7.03 (178.5) | 6.73 (171) | -0.3 (-7.5) -4.2% |
| Revolutions per mile (km) | 629.17 (390.95) | 640.98 (398.28) | 11.81 (7.34) 1.9% |
285/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.63 mph (31.59 km/h) |
| 25 mph (40.23 km/h) | 24.54 mph (39.49 km/h) |
| 30 mph (48.28 km/h) | 29.45 mph (47.39 km/h) |
| 35 mph (56.33 km/h) | 34.36 mph (55.29 km/h) |
| 40 mph (64.37 km/h) | 39.26 mph (63.19 km/h) |
| 45 mph (72.42 km/h) | 44.17 mph (71.09 km/h) |
| 50 mph (80.47 km/h) | 49.08 mph (78.98 km/h) |
| 55 mph (88.51 km/h) | 53.99 mph (86.88 km/h) |
| 60 mph (96.56 km/h) | 58.89 mph (94.78 km/h) |
| 65 mph (104.61 km/h) | 63.8 mph (102.68 km/h) |
| 70 mph (112.65 km/h) | 68.71 mph (110.58 km/h) |
| 75 mph (120.7 km/h) | 73.62 mph (118.48 km/h) |
| 80 mph (128.75 km/h) | 78.53 mph (126.38 km/h) |
| 85 mph (136.79 km/h) | 83.43 mph (134.27 km/h) |
| 90 mph (144.84 km/h) | 88.34 mph (142.17 km/h) |
| 95 mph (152.89 km/h) | 93.25 mph (150.07 km/h) |
| 100 mph (160.93 km/h) | 98.16 mph (157.97 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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