Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/60-17 | 285/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.46 (773.8) | 31.46 (799.2) | 1 (25.4) 3.3% |
| Width inches (mm) | 11.22 (285) | 11.22 (285) | 0 (0) 0% |
| Circum. inches (mm) | 95.71 (2430.96) | 98.85 (2510.76) | 3.14 (79.8) 3.3% |
| Sidewall Height inches (mm) | 6.73 (171) | 6.73 (171) | 0 (0) 0% |
| Revolutions per mile (km) | 662.02 (411.36) | 640.98 (398.28) | -21.04 (-13.07) -3.2% |
285/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.66 mph (33.24 km/h) |
| 25 mph (40.23 km/h) | 25.82 mph (41.55 km/h) |
| 30 mph (48.28 km/h) | 30.98 mph (49.87 km/h) |
| 35 mph (56.33 km/h) | 36.15 mph (58.18 km/h) |
| 40 mph (64.37 km/h) | 41.31 mph (66.49 km/h) |
| 45 mph (72.42 km/h) | 46.48 mph (74.8 km/h) |
| 50 mph (80.47 km/h) | 51.64 mph (83.11 km/h) |
| 55 mph (88.51 km/h) | 56.81 mph (91.42 km/h) |
| 60 mph (96.56 km/h) | 61.97 mph (99.73 km/h) |
| 65 mph (104.61 km/h) | 67.13 mph (108.04 km/h) |
| 70 mph (112.65 km/h) | 72.3 mph (116.35 km/h) |
| 75 mph (120.7 km/h) | 77.46 mph (124.66 km/h) |
| 80 mph (128.75 km/h) | 82.63 mph (132.97 km/h) |
| 85 mph (136.79 km/h) | 87.79 mph (141.28 km/h) |
| 90 mph (144.84 km/h) | 92.95 mph (149.6 km/h) |
| 95 mph (152.89 km/h) | 98.12 mph (157.91 km/h) |
| 100 mph (160.93 km/h) | 103.28 mph (166.22 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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