Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 280/85-16 | 285/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.74 (882.4) | 32.71 (830.8) | -2.03 (-51.6) -5.8% |
| Width inches (mm) | 11.02 (280) | 11.22 (285) | 0.2 (5) 1.8% |
| Circum. inches (mm) | 109.14 (2772.14) | 102.76 (2610.04) | -6.38 (-162.11) -5.8% |
| Sidewall Height inches (mm) | 9.37 (238) | 7.85 (199.5) | -1.52 (-38.5) -16.2% |
| Revolutions per mile (km) | 580.54 (360.73) | 616.6 (383.14) | 36.06 (22.4) 6.2% |
285/70-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.83 mph (30.3 km/h) |
| 25 mph (40.23 km/h) | 23.54 mph (37.88 km/h) |
| 30 mph (48.28 km/h) | 28.25 mph (45.46 km/h) |
| 35 mph (56.33 km/h) | 32.95 mph (53.03 km/h) |
| 40 mph (64.37 km/h) | 37.66 mph (60.61 km/h) |
| 45 mph (72.42 km/h) | 42.37 mph (68.19 km/h) |
| 50 mph (80.47 km/h) | 47.08 mph (75.76 km/h) |
| 55 mph (88.51 km/h) | 51.78 mph (83.34 km/h) |
| 60 mph (96.56 km/h) | 56.49 mph (90.91 km/h) |
| 65 mph (104.61 km/h) | 61.2 mph (98.49 km/h) |
| 70 mph (112.65 km/h) | 65.91 mph (106.07 km/h) |
| 75 mph (120.7 km/h) | 70.61 mph (113.64 km/h) |
| 80 mph (128.75 km/h) | 75.32 mph (121.22 km/h) |
| 85 mph (136.79 km/h) | 80.03 mph (128.8 km/h) |
| 90 mph (144.84 km/h) | 84.74 mph (136.37 km/h) |
| 95 mph (152.89 km/h) | 89.44 mph (143.95 km/h) |
| 100 mph (160.93 km/h) | 94.15 mph (151.52 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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