Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/45-20 | 265/45-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.04 (737.5) | 29.39 (746.5) | 0.35 (9) 1.2% |
| Width inches (mm) | 10.04 (255) | 10.43 (265) | 0.39 (10) 3.9% |
| Circum. inches (mm) | 91.22 (2316.92) | 92.33 (2345.2) | 1.11 (28.27) 1.2% |
| Sidewall Height inches (mm) | 4.52 (114.75) | 4.69 (119.25) | 0.18 (4.5) 3.9% |
| Revolutions per mile (km) | 694.6 (431.61) | 686.23 (426.4) | -8.37 (-5.2) -1.2% |
265/45-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.24 mph (32.58 km/h) |
| 25 mph (40.23 km/h) | 25.31 mph (40.72 km/h) |
| 30 mph (48.28 km/h) | 30.37 mph (48.87 km/h) |
| 35 mph (56.33 km/h) | 35.43 mph (57.01 km/h) |
| 40 mph (64.37 km/h) | 40.49 mph (65.16 km/h) |
| 45 mph (72.42 km/h) | 45.55 mph (73.3 km/h) |
| 50 mph (80.47 km/h) | 50.61 mph (81.45 km/h) |
| 55 mph (88.51 km/h) | 55.67 mph (89.59 km/h) |
| 60 mph (96.56 km/h) | 60.73 mph (97.74 km/h) |
| 65 mph (104.61 km/h) | 65.79 mph (105.88 km/h) |
| 70 mph (112.65 km/h) | 70.85 mph (114.03 km/h) |
| 75 mph (120.7 km/h) | 75.92 mph (122.17 km/h) |
| 80 mph (128.75 km/h) | 80.98 mph (130.32 km/h) |
| 85 mph (136.79 km/h) | 86.04 mph (138.46 km/h) |
| 90 mph (144.84 km/h) | 91.1 mph (146.61 km/h) |
| 95 mph (152.89 km/h) | 96.16 mph (154.75 km/h) |
| 100 mph (160.93 km/h) | 101.22 mph (162.9 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
