Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/45-20 | 265/45-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.68 (728.5) | 29.39 (746.5) | 0.71 (18) 2.5% |
| Width inches (mm) | 9.65 (245) | 10.43 (265) | 0.79 (20) 8.2% |
| Circum. inches (mm) | 90.1 (2288.65) | 92.33 (2345.2) | 2.23 (56.55) 2.5% |
| Sidewall Height inches (mm) | 4.34 (110.25) | 4.69 (119.25) | 0.35 (9) 8.2% |
| Revolutions per mile (km) | 703.18 (436.94) | 686.23 (426.4) | -16.96 (-10.54) -2.4% |
265/45-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.49 mph (32.98 km/h) |
| 25 mph (40.23 km/h) | 25.62 mph (41.23 km/h) |
| 30 mph (48.28 km/h) | 30.74 mph (49.47 km/h) |
| 35 mph (56.33 km/h) | 35.86 mph (57.72 km/h) |
| 40 mph (64.37 km/h) | 40.99 mph (65.96 km/h) |
| 45 mph (72.42 km/h) | 46.11 mph (74.21 km/h) |
| 50 mph (80.47 km/h) | 51.24 mph (82.46 km/h) |
| 55 mph (88.51 km/h) | 56.36 mph (90.7 km/h) |
| 60 mph (96.56 km/h) | 61.48 mph (98.95 km/h) |
| 65 mph (104.61 km/h) | 66.61 mph (107.19 km/h) |
| 70 mph (112.65 km/h) | 71.73 mph (115.44 km/h) |
| 75 mph (120.7 km/h) | 76.85 mph (123.68 km/h) |
| 80 mph (128.75 km/h) | 81.98 mph (131.93 km/h) |
| 85 mph (136.79 km/h) | 87.1 mph (140.17 km/h) |
| 90 mph (144.84 km/h) | 92.22 mph (148.42 km/h) |
| 95 mph (152.89 km/h) | 97.35 mph (156.67 km/h) |
| 100 mph (160.93 km/h) | 102.47 mph (164.91 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
