Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/45-20 | 265/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.04 (737.5) | 30.43 (773) | 1.4 (35.5) 4.8% |
| Width inches (mm) | 10.04 (255) | 10.43 (265) | 0.39 (10) 3.9% |
| Circum. inches (mm) | 91.22 (2316.92) | 95.61 (2428.45) | 4.39 (111.53) 4.8% |
| Sidewall Height inches (mm) | 4.52 (114.75) | 5.22 (132.5) | 0.7 (17.75) 15.5% |
| Revolutions per mile (km) | 694.6 (431.61) | 662.7 (411.78) | -31.9 (-19.82) -4.6% |
265/50-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.96 mph (33.74 km/h) |
| 25 mph (40.23 km/h) | 26.2 mph (42.17 km/h) |
| 30 mph (48.28 km/h) | 31.44 mph (50.6 km/h) |
| 35 mph (56.33 km/h) | 36.68 mph (59.04 km/h) |
| 40 mph (64.37 km/h) | 41.93 mph (67.47 km/h) |
| 45 mph (72.42 km/h) | 47.17 mph (75.91 km/h) |
| 50 mph (80.47 km/h) | 52.41 mph (84.34 km/h) |
| 55 mph (88.51 km/h) | 57.65 mph (92.77 km/h) |
| 60 mph (96.56 km/h) | 62.89 mph (101.21 km/h) |
| 65 mph (104.61 km/h) | 68.13 mph (109.64 km/h) |
| 70 mph (112.65 km/h) | 73.37 mph (118.08 km/h) |
| 75 mph (120.7 km/h) | 78.61 mph (126.51 km/h) |
| 80 mph (128.75 km/h) | 83.85 mph (134.95 km/h) |
| 85 mph (136.79 km/h) | 89.09 mph (143.38 km/h) |
| 90 mph (144.84 km/h) | 94.33 mph (151.81 km/h) |
| 95 mph (152.89 km/h) | 99.57 mph (160.25 km/h) |
| 100 mph (160.93 km/h) | 104.81 mph (168.68 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
