Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/60-20 | 305/45-22 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.99 (838) | 32.81 (833.3) | -0.19 (-4.7) -0.6% |
| Width inches (mm) | 10.83 (275) | 12.01 (305) | 1.18 (30) 10.9% |
| Circum. inches (mm) | 103.65 (2632.65) | 103.07 (2617.89) | -0.58 (-14.77) -0.6% |
| Sidewall Height inches (mm) | 6.5 (165) | 5.4 (137.25) | -1.09 (-27.75) -16.8% |
| Revolutions per mile (km) | 611.3 (379.84) | 614.75 (381.99) | 3.45 (2.14) 0.6% |
305/45-22 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.89 mph (32.01 km/h) |
| 25 mph (40.23 km/h) | 24.86 mph (40.01 km/h) |
| 30 mph (48.28 km/h) | 29.83 mph (48.01 km/h) |
| 35 mph (56.33 km/h) | 34.8 mph (56.01 km/h) |
| 40 mph (64.37 km/h) | 39.78 mph (64.01 km/h) |
| 45 mph (72.42 km/h) | 44.75 mph (72.01 km/h) |
| 50 mph (80.47 km/h) | 49.72 mph (80.02 km/h) |
| 55 mph (88.51 km/h) | 54.69 mph (88.02 km/h) |
| 60 mph (96.56 km/h) | 59.66 mph (96.02 km/h) |
| 65 mph (104.61 km/h) | 64.64 mph (104.02 km/h) |
| 70 mph (112.65 km/h) | 69.61 mph (112.02 km/h) |
| 75 mph (120.7 km/h) | 74.58 mph (120.02 km/h) |
| 80 mph (128.75 km/h) | 79.55 mph (128.03 km/h) |
| 85 mph (136.79 km/h) | 84.52 mph (136.03 km/h) |
| 90 mph (144.84 km/h) | 89.5 mph (144.03 km/h) |
| 95 mph (152.89 km/h) | 94.47 mph (152.03 km/h) |
| 100 mph (160.93 km/h) | 99.44 mph (160.03 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1564 | 1817 | 1957 | 2044 | 2137 | 2203 | 2277 | 2363 | 2483 | 2603 | 2736 | 2843 | 3036 | 3249 | 3415 | 3522 | 3582 | 3801 | 4107 | 4773 |
Better Fuel Economy Factory Ratios Increased Power
