Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/45-21 | 265/50-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.39 (771.9) | 31.43 (798.4) | 1.04 (26.5) 3.4% |
| Width inches (mm) | 10.43 (265) | 10.43 (265) | 0 (0) 0% |
| Circum. inches (mm) | 95.47 (2425) | 98.75 (2508.25) | 3.28 (83.25) 3.4% |
| Sidewall Height inches (mm) | 4.69 (119.25) | 5.22 (132.5) | 0.52 (13.25) 11.1% |
| Revolutions per mile (km) | 663.65 (412.37) | 641.62 (398.68) | -22.03 (-13.69) -3.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.69 mph (33.29 km/h) |
| 25 mph (40.23 km/h) | 25.86 mph (41.61 km/h) |
| 30 mph (48.28 km/h) | 31.03 mph (49.94 km/h) |
| 35 mph (56.33 km/h) | 36.2 mph (58.26 km/h) |
| 40 mph (64.37 km/h) | 41.37 mph (66.58 km/h) |
| 45 mph (72.42 km/h) | 46.54 mph (74.91 km/h) |
| 50 mph (80.47 km/h) | 51.72 mph (83.23 km/h) |
| 55 mph (88.51 km/h) | 56.89 mph (91.55 km/h) |
| 60 mph (96.56 km/h) | 62.06 mph (99.88 km/h) |
| 65 mph (104.61 km/h) | 67.23 mph (108.2 km/h) |
| 70 mph (112.65 km/h) | 72.4 mph (116.52 km/h) |
| 75 mph (120.7 km/h) | 77.57 mph (124.84 km/h) |
| 80 mph (128.75 km/h) | 82.75 mph (133.17 km/h) |
| 85 mph (136.79 km/h) | 87.92 mph (141.49 km/h) |
| 90 mph (144.84 km/h) | 93.09 mph (149.81 km/h) |
| 95 mph (152.89 km/h) | 98.26 mph (158.14 km/h) |
| 100 mph (160.93 km/h) | 103.43 mph (166.46 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1633 | 1897 | 2043 | 2133 | 2230 | 2300 | 2376 | 2467 | 2592 | 2717 | 2856 | 2967 | 3168 | 3391 | 3564 | 3676 | 3738 | 3967 | 4287 | 4982 |
Better Fuel Economy Factory Ratios Increased Power
