Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/40-20 | 265/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.35 (720) | 30.43 (773) | 2.09 (53) 7.4% |
| Width inches (mm) | 10.43 (265) | 10.43 (265) | 0 (0) 0% |
| Circum. inches (mm) | 89.05 (2261.95) | 95.61 (2428.45) | 6.56 (166.5) 7.4% |
| Sidewall Height inches (mm) | 4.17 (106) | 5.22 (132.5) | 1.04 (26.5) 25% |
| Revolutions per mile (km) | 711.49 (442.1) | 662.7 (411.78) | -48.78 (-30.31) -6.9% |
265/50-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.47 mph (34.56 km/h) |
| 25 mph (40.23 km/h) | 26.84 mph (43.2 km/h) |
| 30 mph (48.28 km/h) | 32.21 mph (51.83 km/h) |
| 35 mph (56.33 km/h) | 37.58 mph (60.47 km/h) |
| 40 mph (64.37 km/h) | 42.94 mph (69.11 km/h) |
| 45 mph (72.42 km/h) | 48.31 mph (77.75 km/h) |
| 50 mph (80.47 km/h) | 53.68 mph (86.39 km/h) |
| 55 mph (88.51 km/h) | 59.05 mph (95.03 km/h) |
| 60 mph (96.56 km/h) | 64.42 mph (103.67 km/h) |
| 65 mph (104.61 km/h) | 69.78 mph (112.31 km/h) |
| 70 mph (112.65 km/h) | 75.15 mph (120.95 km/h) |
| 75 mph (120.7 km/h) | 80.52 mph (129.59 km/h) |
| 80 mph (128.75 km/h) | 85.89 mph (138.23 km/h) |
| 85 mph (136.79 km/h) | 91.26 mph (146.86 km/h) |
| 90 mph (144.84 km/h) | 96.63 mph (155.5 km/h) |
| 95 mph (152.89 km/h) | 101.99 mph (164.14 km/h) |
| 100 mph (160.93 km/h) | 107.36 mph (172.78 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
