Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/50-20 | 285/45-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.43 (773) | 30.1 (764.5) | -0.33 (-8.5) -1.1% |
| Width inches (mm) | 10.43 (265) | 11.22 (285) | 0.79 (20) 7.5% |
| Circum. inches (mm) | 95.61 (2428.45) | 94.56 (2401.75) | -1.05 (-26.7) -1.1% |
| Sidewall Height inches (mm) | 5.22 (132.5) | 5.05 (128.25) | -0.17 (-4.25) -3.2% |
| Revolutions per mile (km) | 662.7 (411.78) | 670.07 (416.36) | 7.37 (4.58) 1.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.78 mph (31.83 km/h) |
| 25 mph (40.23 km/h) | 24.73 mph (39.79 km/h) |
| 30 mph (48.28 km/h) | 29.67 mph (47.75 km/h) |
| 35 mph (56.33 km/h) | 34.62 mph (55.71 km/h) |
| 40 mph (64.37 km/h) | 39.56 mph (63.67 km/h) |
| 45 mph (72.42 km/h) | 44.51 mph (71.62 km/h) |
| 50 mph (80.47 km/h) | 49.45 mph (79.58 km/h) |
| 55 mph (88.51 km/h) | 54.4 mph (87.54 km/h) |
| 60 mph (96.56 km/h) | 59.34 mph (95.5 km/h) |
| 65 mph (104.61 km/h) | 64.29 mph (103.46 km/h) |
| 70 mph (112.65 km/h) | 69.23 mph (111.42 km/h) |
| 75 mph (120.7 km/h) | 74.18 mph (119.37 km/h) |
| 80 mph (128.75 km/h) | 79.12 mph (127.33 km/h) |
| 85 mph (136.79 km/h) | 84.07 mph (135.29 km/h) |
| 90 mph (144.84 km/h) | 89.01 mph (143.25 km/h) |
| 95 mph (152.89 km/h) | 93.96 mph (151.21 km/h) |
| 100 mph (160.93 km/h) | 98.9 mph (159.17 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1705 | 1981 | 2133 | 2228 | 2329 | 2402 | 2482 | 2576 | 2707 | 2837 | 2982 | 3098 | 3309 | 3541 | 3722 | 3839 | 3904 | 4143 | 4477 | 5203 |
Better Fuel Economy Factory Ratios Increased Power
