Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/35-22 | 305/45-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.41 (772.3) | 31.81 (807.9) | 1.4 (35.6) 4.6% |
| Width inches (mm) | 12.01 (305) | 12.01 (305) | 0 (0) 0% |
| Circum. inches (mm) | 95.52 (2426.25) | 99.92 (2538.09) | 4.4 (111.84) 4.6% |
| Sidewall Height inches (mm) | 4.2 (106.75) | 5.4 (137.25) | 1.2 (30.5) 28.6% |
| Revolutions per mile (km) | 663.3 (412.16) | 634.08 (394) | -29.23 (-18.16) -4.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.92 mph (33.67 km/h) |
| 25 mph (40.23 km/h) | 26.15 mph (42.09 km/h) |
| 30 mph (48.28 km/h) | 31.38 mph (50.51 km/h) |
| 35 mph (56.33 km/h) | 36.61 mph (58.92 km/h) |
| 40 mph (64.37 km/h) | 41.84 mph (67.34 km/h) |
| 45 mph (72.42 km/h) | 47.07 mph (75.76 km/h) |
| 50 mph (80.47 km/h) | 52.3 mph (84.18 km/h) |
| 55 mph (88.51 km/h) | 57.54 mph (92.59 km/h) |
| 60 mph (96.56 km/h) | 62.77 mph (101.01 km/h) |
| 65 mph (104.61 km/h) | 68 mph (109.43 km/h) |
| 70 mph (112.65 km/h) | 73.23 mph (117.85 km/h) |
| 75 mph (120.7 km/h) | 78.46 mph (126.26 km/h) |
| 80 mph (128.75 km/h) | 83.69 mph (134.68 km/h) |
| 85 mph (136.79 km/h) | 88.92 mph (143.1 km/h) |
| 90 mph (144.84 km/h) | 94.15 mph (151.52 km/h) |
| 95 mph (152.89 km/h) | 99.38 mph (159.94 km/h) |
| 100 mph (160.93 km/h) | 104.61 mph (168.35 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1614 | 1875 | 2019 | 2108 | 2204 | 2273 | 2348 | 2438 | 2561 | 2685 | 2822 | 2932 | 3131 | 3351 | 3522 | 3632 | 3694 | 3921 | 4237 | 4923 |
Better Fuel Economy Factory Ratios Increased Power
