Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/45-21 | 265/55-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.39 (771.9) | 32.48 (824.9) | 2.09 (53) 6.9% |
| Width inches (mm) | 10.43 (265) | 10.43 (265) | 0 (0) 0% |
| Circum. inches (mm) | 95.47 (2425) | 102.03 (2591.5) | 6.56 (166.5) 6.9% |
| Sidewall Height inches (mm) | 4.69 (119.25) | 5.74 (145.75) | 1.04 (26.5) 22.2% |
| Revolutions per mile (km) | 663.65 (412.37) | 621.01 (385.88) | -42.64 (-26.49) -6.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.37 mph (34.4 km/h) |
| 25 mph (40.23 km/h) | 26.72 mph (43 km/h) |
| 30 mph (48.28 km/h) | 32.06 mph (51.6 km/h) |
| 35 mph (56.33 km/h) | 37.4 mph (60.19 km/h) |
| 40 mph (64.37 km/h) | 42.75 mph (68.79 km/h) |
| 45 mph (72.42 km/h) | 48.09 mph (77.39 km/h) |
| 50 mph (80.47 km/h) | 53.43 mph (85.99 km/h) |
| 55 mph (88.51 km/h) | 58.78 mph (94.59 km/h) |
| 60 mph (96.56 km/h) | 64.12 mph (103.19 km/h) |
| 65 mph (104.61 km/h) | 69.46 mph (111.79 km/h) |
| 70 mph (112.65 km/h) | 74.81 mph (120.39 km/h) |
| 75 mph (120.7 km/h) | 80.15 mph (128.99 km/h) |
| 80 mph (128.75 km/h) | 85.49 mph (137.59 km/h) |
| 85 mph (136.79 km/h) | 90.84 mph (146.19 km/h) |
| 90 mph (144.84 km/h) | 96.18 mph (154.79 km/h) |
| 95 mph (152.89 km/h) | 101.52 mph (163.39 km/h) |
| 100 mph (160.93 km/h) | 106.87 mph (171.98 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1580 | 1836 | 1977 | 2065 | 2159 | 2226 | 2300 | 2387 | 2508 | 2629 | 2764 | 2872 | 3067 | 3282 | 3450 | 3557 | 3618 | 3840 | 4149 | 4822 |
Better Fuel Economy Factory Ratios Increased Power
