Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/30-21 | 245/30-22 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.02 (686.4) | 27.79 (705.8) | 0.76 (19.4) 2.8% |
| Width inches (mm) | 10.04 (255) | 9.65 (245) | -0.39 (-10) -3.9% |
| Circum. inches (mm) | 84.9 (2156.39) | 87.3 (2217.34) | 2.4 (60.95) 2.8% |
| Sidewall Height inches (mm) | 3.01 (76.5) | 2.89 (73.5) | -0.12 (-3) -3.9% |
| Revolutions per mile (km) | 746.31 (463.74) | 725.8 (450.99) | -20.51 (-12.75) -2.7% |
245/30-22 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.57 mph (33.1 km/h) |
| 25 mph (40.23 km/h) | 25.71 mph (41.37 km/h) |
| 30 mph (48.28 km/h) | 30.85 mph (49.64 km/h) |
| 35 mph (56.33 km/h) | 35.99 mph (57.92 km/h) |
| 40 mph (64.37 km/h) | 41.13 mph (66.19 km/h) |
| 45 mph (72.42 km/h) | 46.27 mph (74.47 km/h) |
| 50 mph (80.47 km/h) | 51.41 mph (82.74 km/h) |
| 55 mph (88.51 km/h) | 56.55 mph (91.02 km/h) |
| 60 mph (96.56 km/h) | 61.7 mph (99.29 km/h) |
| 65 mph (104.61 km/h) | 66.84 mph (107.56 km/h) |
| 70 mph (112.65 km/h) | 71.98 mph (115.84 km/h) |
| 75 mph (120.7 km/h) | 77.12 mph (124.11 km/h) |
| 80 mph (128.75 km/h) | 82.26 mph (132.39 km/h) |
| 85 mph (136.79 km/h) | 87.4 mph (140.66 km/h) |
| 90 mph (144.84 km/h) | 92.54 mph (148.93 km/h) |
| 95 mph (152.89 km/h) | 97.69 mph (157.21 km/h) |
| 100 mph (160.93 km/h) | 102.83 mph (165.48 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
