Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/70-17 | 285/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.81 (858.8) | 32.71 (830.8) | -1.1 (-28) -3.3% |
| Width inches (mm) | 12.01 (305) | 11.22 (285) | -0.79 (-20) -6.6% |
| Circum. inches (mm) | 106.22 (2698) | 102.76 (2610.04) | -3.46 (-87.96) -3.3% |
| Sidewall Height inches (mm) | 8.41 (213.5) | 7.85 (199.5) | -0.55 (-14) -6.6% |
| Revolutions per mile (km) | 596.5 (370.64) | 616.6 (383.14) | 20.1 (12.49) 3.4% |
285/70-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.35 mph (31.14 km/h) |
| 25 mph (40.23 km/h) | 24.18 mph (38.92 km/h) |
| 30 mph (48.28 km/h) | 29.02 mph (46.71 km/h) |
| 35 mph (56.33 km/h) | 33.86 mph (54.49 km/h) |
| 40 mph (64.37 km/h) | 38.7 mph (62.28 km/h) |
| 45 mph (72.42 km/h) | 43.53 mph (70.06 km/h) |
| 50 mph (80.47 km/h) | 48.37 mph (77.84 km/h) |
| 55 mph (88.51 km/h) | 53.21 mph (85.63 km/h) |
| 60 mph (96.56 km/h) | 58.04 mph (93.41 km/h) |
| 65 mph (104.61 km/h) | 62.88 mph (101.2 km/h) |
| 70 mph (112.65 km/h) | 67.72 mph (108.98 km/h) |
| 75 mph (120.7 km/h) | 72.55 mph (116.77 km/h) |
| 80 mph (128.75 km/h) | 77.39 mph (124.55 km/h) |
| 85 mph (136.79 km/h) | 82.23 mph (132.33 km/h) |
| 90 mph (144.84 km/h) | 87.07 mph (140.12 km/h) |
| 95 mph (152.89 km/h) | 91.9 mph (147.9 km/h) |
| 100 mph (160.93 km/h) | 96.74 mph (155.69 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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