Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/70-20 | 285/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 35.71 (907) | 33.46 (850) | -2.24 (-57) -6.3% |
| Width inches (mm) | 11.22 (285) | 11.22 (285) | 0 (0) 0% |
| Circum. inches (mm) | 112.18 (2849.42) | 105.13 (2670.35) | -7.05 (-179.07) -6.3% |
| Sidewall Height inches (mm) | 7.85 (199.5) | 6.73 (171) | -1.12 (-28.5) -14.3% |
| Revolutions per mile (km) | 564.8 (350.95) | 602.67 (374.48) | 37.87 (23.53) 6.7% |
285/60-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.74 mph (30.16 km/h) |
| 25 mph (40.23 km/h) | 23.43 mph (37.71 km/h) |
| 30 mph (48.28 km/h) | 28.11 mph (45.25 km/h) |
| 35 mph (56.33 km/h) | 32.8 mph (52.79 km/h) |
| 40 mph (64.37 km/h) | 37.49 mph (60.33 km/h) |
| 45 mph (72.42 km/h) | 42.17 mph (67.87 km/h) |
| 50 mph (80.47 km/h) | 46.86 mph (75.41 km/h) |
| 55 mph (88.51 km/h) | 51.54 mph (82.95 km/h) |
| 60 mph (96.56 km/h) | 56.23 mph (90.49 km/h) |
| 65 mph (104.61 km/h) | 60.92 mph (98.03 km/h) |
| 70 mph (112.65 km/h) | 65.6 mph (105.57 km/h) |
| 75 mph (120.7 km/h) | 70.29 mph (113.12 km/h) |
| 80 mph (128.75 km/h) | 74.97 mph (120.66 km/h) |
| 85 mph (136.79 km/h) | 79.66 mph (128.2 km/h) |
| 90 mph (144.84 km/h) | 84.34 mph (135.74 km/h) |
| 95 mph (152.89 km/h) | 89.03 mph (143.28 km/h) |
| 100 mph (160.93 km/h) | 93.72 mph (150.82 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1534 | 1782 | 1919 | 2004 | 2095 | 2160 | 2232 | 2317 | 2434 | 2552 | 2682 | 2787 | 2976 | 3185 | 3348 | 3452 | 3511 | 3727 | 4027 | 4679 |
Better Fuel Economy Factory Ratios Increased Power
