Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/45-22 | 285/55-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.1 (815.3) | 32.34 (821.5) | 0.24 (6.2) 0.8% |
| Width inches (mm) | 11.22 (285) | 11.22 (285) | 0 (0) 0% |
| Circum. inches (mm) | 100.84 (2561.34) | 101.61 (2580.82) | 0.77 (19.48) 0.8% |
| Sidewall Height inches (mm) | 5.05 (128.25) | 6.17 (156.75) | 1.12 (28.5) 22.2% |
| Revolutions per mile (km) | 628.32 (390.42) | 623.58 (387.47) | -4.74 (-2.95) -0.8% |
285/55-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.15 mph (32.43 km/h) |
| 25 mph (40.23 km/h) | 25.19 mph (40.54 km/h) |
| 30 mph (48.28 km/h) | 30.23 mph (48.65 km/h) |
| 35 mph (56.33 km/h) | 35.27 mph (56.76 km/h) |
| 40 mph (64.37 km/h) | 40.3 mph (64.86 km/h) |
| 45 mph (72.42 km/h) | 45.34 mph (72.97 km/h) |
| 50 mph (80.47 km/h) | 50.38 mph (81.08 km/h) |
| 55 mph (88.51 km/h) | 55.42 mph (89.19 km/h) |
| 60 mph (96.56 km/h) | 60.46 mph (97.3 km/h) |
| 65 mph (104.61 km/h) | 65.49 mph (105.4 km/h) |
| 70 mph (112.65 km/h) | 70.53 mph (113.51 km/h) |
| 75 mph (120.7 km/h) | 75.57 mph (121.62 km/h) |
| 80 mph (128.75 km/h) | 80.61 mph (129.73 km/h) |
| 85 mph (136.79 km/h) | 85.65 mph (137.83 km/h) |
| 90 mph (144.84 km/h) | 90.68 mph (145.94 km/h) |
| 95 mph (152.89 km/h) | 95.72 mph (154.05 km/h) |
| 100 mph (160.93 km/h) | 100.76 mph (162.16 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1587 | 1843 | 1985 | 2073 | 2168 | 2235 | 2309 | 2397 | 2519 | 2640 | 2775 | 2883 | 3079 | 3295 | 3464 | 3572 | 3633 | 3856 | 4166 | 4842 |
Better Fuel Economy Factory Ratios Increased Power
