Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/25-21 | 245/30-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.81 (680.9) | 26.79 (680.4) | -0.02 (-0.5) -0.1% |
| Width inches (mm) | 11.61 (295) | 9.65 (245) | -1.97 (-50) -16.9% |
| Circum. inches (mm) | 84.22 (2139.11) | 84.16 (2137.54) | -0.06 (-1.57) -0.1% |
| Sidewall Height inches (mm) | 2.9 (73.75) | 2.89 (73.5) | -0.01 (-0.25) -0.3% |
| Revolutions per mile (km) | 752.34 (467.48) | 752.9 (467.83) | 0.55 (0.34) 0.1% |
245/30-21 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.99 mph (32.16 km/h) |
| 25 mph (40.23 km/h) | 24.98 mph (40.2 km/h) |
| 30 mph (48.28 km/h) | 29.98 mph (48.24 km/h) |
| 35 mph (56.33 km/h) | 34.97 mph (56.29 km/h) |
| 40 mph (64.37 km/h) | 39.97 mph (64.33 km/h) |
| 45 mph (72.42 km/h) | 44.97 mph (72.37 km/h) |
| 50 mph (80.47 km/h) | 49.96 mph (80.41 km/h) |
| 55 mph (88.51 km/h) | 54.96 mph (88.45 km/h) |
| 60 mph (96.56 km/h) | 59.96 mph (96.49 km/h) |
| 65 mph (104.61 km/h) | 64.95 mph (104.53 km/h) |
| 70 mph (112.65 km/h) | 69.95 mph (112.57 km/h) |
| 75 mph (120.7 km/h) | 74.94 mph (120.61 km/h) |
| 80 mph (128.75 km/h) | 79.94 mph (128.65 km/h) |
| 85 mph (136.79 km/h) | 84.94 mph (136.69 km/h) |
| 90 mph (144.84 km/h) | 89.93 mph (144.73 km/h) |
| 95 mph (152.89 km/h) | 94.93 mph (152.78 km/h) |
| 100 mph (160.93 km/h) | 99.93 mph (160.82 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1916 | 2226 | 2397 | 2503 | 2617 | 2699 | 2788 | 2894 | 3041 | 3188 | 3351 | 3481 | 3718 | 3979 | 4183 | 4313 | 4386 | 4655 | 5030 | 5846 |
Better Fuel Economy Factory Ratios Increased Power
