Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/60-18 | 285/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.46 (799.2) | 32.71 (830.8) | 1.24 (31.6) 4% |
| Width inches (mm) | 11.22 (285) | 11.22 (285) | 0 (0) 0% |
| Circum. inches (mm) | 98.85 (2510.76) | 102.76 (2610.04) | 3.91 (99.27) 4% |
| Sidewall Height inches (mm) | 6.73 (171) | 7.85 (199.5) | 1.12 (28.5) 16.7% |
| Revolutions per mile (km) | 640.98 (398.28) | 616.6 (383.14) | -24.38 (-15.15) -3.8% |
285/70-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.79 mph (33.46 km/h) |
| 25 mph (40.23 km/h) | 25.99 mph (41.82 km/h) |
| 30 mph (48.28 km/h) | 31.19 mph (50.19 km/h) |
| 35 mph (56.33 km/h) | 36.38 mph (58.55 km/h) |
| 40 mph (64.37 km/h) | 41.58 mph (66.92 km/h) |
| 45 mph (72.42 km/h) | 46.78 mph (75.28 km/h) |
| 50 mph (80.47 km/h) | 51.98 mph (83.65 km/h) |
| 55 mph (88.51 km/h) | 57.17 mph (92.01 km/h) |
| 60 mph (96.56 km/h) | 62.37 mph (100.38 km/h) |
| 65 mph (104.61 km/h) | 67.57 mph (108.74 km/h) |
| 70 mph (112.65 km/h) | 72.77 mph (117.11 km/h) |
| 75 mph (120.7 km/h) | 77.97 mph (125.47 km/h) |
| 80 mph (128.75 km/h) | 83.16 mph (133.84 km/h) |
| 85 mph (136.79 km/h) | 88.36 mph (142.2 km/h) |
| 90 mph (144.84 km/h) | 93.56 mph (150.57 km/h) |
| 95 mph (152.89 km/h) | 98.76 mph (158.93 km/h) |
| 100 mph (160.93 km/h) | 103.95 mph (167.3 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1569 | 1823 | 1963 | 2050 | 2143 | 2210 | 2284 | 2370 | 2491 | 2611 | 2744 | 2851 | 3045 | 3258 | 3425 | 3532 | 3592 | 3813 | 4120 | 4788 |
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