Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/55-17 | 285/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.91 (734.3) | 32.71 (830.8) | 3.8 (96.5) 13.1% |
| Width inches (mm) | 10.83 (275) | 11.22 (285) | 0.39 (10) 3.6% |
| Circum. inches (mm) | 90.82 (2306.87) | 102.76 (2610.04) | 11.94 (303.16) 13.1% |
| Sidewall Height inches (mm) | 5.95 (151.25) | 7.85 (199.5) | 1.9 (48.25) 31.9% |
| Revolutions per mile (km) | 697.63 (433.49) | 616.6 (383.14) | -81.03 (-50.35) -11.6% |
285/70-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.63 mph (36.42 km/h) |
| 25 mph (40.23 km/h) | 28.29 mph (45.52 km/h) |
| 30 mph (48.28 km/h) | 33.94 mph (54.63 km/h) |
| 35 mph (56.33 km/h) | 39.6 mph (63.73 km/h) |
| 40 mph (64.37 km/h) | 45.26 mph (72.83 km/h) |
| 45 mph (72.42 km/h) | 50.91 mph (81.94 km/h) |
| 50 mph (80.47 km/h) | 56.57 mph (91.04 km/h) |
| 55 mph (88.51 km/h) | 62.23 mph (100.15 km/h) |
| 60 mph (96.56 km/h) | 67.89 mph (109.25 km/h) |
| 65 mph (104.61 km/h) | 73.54 mph (118.35 km/h) |
| 70 mph (112.65 km/h) | 79.2 mph (127.46 km/h) |
| 75 mph (120.7 km/h) | 84.86 mph (136.56 km/h) |
| 80 mph (128.75 km/h) | 90.51 mph (145.67 km/h) |
| 85 mph (136.79 km/h) | 96.17 mph (154.77 km/h) |
| 90 mph (144.84 km/h) | 101.83 mph (163.88 km/h) |
| 95 mph (152.89 km/h) | 107.48 mph (172.98 km/h) |
| 100 mph (160.93 km/h) | 113.14 mph (182.08 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 |
Better Fuel Economy Factory Ratios Increased Power
