Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/40-20 | 245/30-22 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.72 (704) | 27.79 (705.8) | 0.07 (1.8) 0.3% |
| Width inches (mm) | 9.65 (245) | 9.65 (245) | 0 (0) 0% |
| Circum. inches (mm) | 87.07 (2211.68) | 87.3 (2217.34) | 0.22 (5.65) 0.3% |
| Sidewall Height inches (mm) | 3.86 (98) | 2.89 (73.5) | -0.96 (-24.5) -25% |
| Revolutions per mile (km) | 727.66 (452.14) | 725.8 (450.99) | -1.86 (-1.15) -0.3% |
245/30-22 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.05 mph (32.27 km/h) |
| 25 mph (40.23 km/h) | 25.06 mph (40.34 km/h) |
| 30 mph (48.28 km/h) | 30.08 mph (48.4 km/h) |
| 35 mph (56.33 km/h) | 35.09 mph (56.47 km/h) |
| 40 mph (64.37 km/h) | 40.1 mph (64.54 km/h) |
| 45 mph (72.42 km/h) | 45.12 mph (72.61 km/h) |
| 50 mph (80.47 km/h) | 50.13 mph (80.67 km/h) |
| 55 mph (88.51 km/h) | 55.14 mph (88.74 km/h) |
| 60 mph (96.56 km/h) | 60.15 mph (96.81 km/h) |
| 65 mph (104.61 km/h) | 65.17 mph (104.88 km/h) |
| 70 mph (112.65 km/h) | 70.18 mph (112.94 km/h) |
| 75 mph (120.7 km/h) | 75.19 mph (121.01 km/h) |
| 80 mph (128.75 km/h) | 80.2 mph (129.08 km/h) |
| 85 mph (136.79 km/h) | 85.22 mph (137.14 km/h) |
| 90 mph (144.84 km/h) | 90.23 mph (145.21 km/h) |
| 95 mph (152.89 km/h) | 95.24 mph (153.28 km/h) |
| 100 mph (160.93 km/h) | 100.26 mph (161.35 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1847 | 2146 | 2311 | 2413 | 2523 | 2602 | 2688 | 2790 | 2932 | 3073 | 3230 | 3356 | 3584 | 3836 | 4032 | 4158 | 4229 | 4488 | 4849 | 5635 |
Better Fuel Economy Factory Ratios Increased Power
