Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/50-20 | 265/45-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.25 (743) | 29.39 (746.5) | 0.14 (3.5) 0.5% |
| Width inches (mm) | 9.25 (235) | 10.43 (265) | 1.18 (30) 12.8% |
| Circum. inches (mm) | 91.9 (2334.2) | 92.33 (2345.2) | 0.43 (11) 0.5% |
| Sidewall Height inches (mm) | 4.63 (117.5) | 4.69 (119.25) | 0.07 (1.75) 1.5% |
| Revolutions per mile (km) | 689.46 (428.41) | 686.23 (426.4) | -3.23 (-2.01) -0.5% |
265/45-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.09 mph (32.34 km/h) |
| 25 mph (40.23 km/h) | 25.12 mph (40.42 km/h) |
| 30 mph (48.28 km/h) | 30.14 mph (48.51 km/h) |
| 35 mph (56.33 km/h) | 35.16 mph (56.59 km/h) |
| 40 mph (64.37 km/h) | 40.19 mph (64.68 km/h) |
| 45 mph (72.42 km/h) | 45.21 mph (72.76 km/h) |
| 50 mph (80.47 km/h) | 50.24 mph (80.85 km/h) |
| 55 mph (88.51 km/h) | 55.26 mph (88.93 km/h) |
| 60 mph (96.56 km/h) | 60.28 mph (97.02 km/h) |
| 65 mph (104.61 km/h) | 65.31 mph (105.1 km/h) |
| 70 mph (112.65 km/h) | 70.33 mph (113.18 km/h) |
| 75 mph (120.7 km/h) | 75.35 mph (121.27 km/h) |
| 80 mph (128.75 km/h) | 80.38 mph (129.35 km/h) |
| 85 mph (136.79 km/h) | 85.4 mph (137.44 km/h) |
| 90 mph (144.84 km/h) | 90.42 mph (145.52 km/h) |
| 95 mph (152.89 km/h) | 95.45 mph (153.61 km/h) |
| 100 mph (160.93 km/h) | 100.47 mph (161.69 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1746 | 2029 | 2185 | 2281 | 2385 | 2460 | 2541 | 2638 | 2772 | 2906 | 3054 | 3173 | 3389 | 3626 | 3812 | 3931 | 3998 | 4243 | 4585 | 5328 |
Better Fuel Economy Factory Ratios Increased Power
