Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/45-20 | 265/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.1 (764.5) | 30.43 (773) | 0.33 (8.5) 1.1% |
| Width inches (mm) | 11.22 (285) | 10.43 (265) | -0.79 (-20) -7% |
| Circum. inches (mm) | 94.56 (2401.75) | 95.61 (2428.45) | 1.05 (26.7) 1.1% |
| Sidewall Height inches (mm) | 5.05 (128.25) | 5.22 (132.5) | 0.17 (4.25) 3.3% |
| Revolutions per mile (km) | 670.07 (416.36) | 662.7 (411.78) | -7.37 (-4.58) -1.1% |
265/50-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.22 mph (32.54 km/h) |
| 25 mph (40.23 km/h) | 25.28 mph (40.68 km/h) |
| 30 mph (48.28 km/h) | 30.33 mph (48.82 km/h) |
| 35 mph (56.33 km/h) | 35.39 mph (56.95 km/h) |
| 40 mph (64.37 km/h) | 40.44 mph (65.09 km/h) |
| 45 mph (72.42 km/h) | 45.5 mph (73.23 km/h) |
| 50 mph (80.47 km/h) | 50.56 mph (81.36 km/h) |
| 55 mph (88.51 km/h) | 55.61 mph (89.5 km/h) |
| 60 mph (96.56 km/h) | 60.67 mph (97.63 km/h) |
| 65 mph (104.61 km/h) | 65.72 mph (105.77 km/h) |
| 70 mph (112.65 km/h) | 70.78 mph (113.91 km/h) |
| 75 mph (120.7 km/h) | 75.83 mph (122.04 km/h) |
| 80 mph (128.75 km/h) | 80.89 mph (130.18 km/h) |
| 85 mph (136.79 km/h) | 85.95 mph (138.32 km/h) |
| 90 mph (144.84 km/h) | 91 mph (146.45 km/h) |
| 95 mph (152.89 km/h) | 96.06 mph (154.59 km/h) |
| 100 mph (160.93 km/h) | 101.11 mph (162.72 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1686 | 1959 | 2110 | 2203 | 2304 | 2375 | 2454 | 2548 | 2677 | 2806 | 2950 | 3064 | 3272 | 3502 | 3681 | 3796 | 3861 | 4098 | 4428 | 5145 |
Better Fuel Economy Factory Ratios Increased Power
