Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/80-22.5 | 385/65-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 42.34 (1075.5) | 42.2 (1072) | -0.14 (-3.5) -0.3% |
| Width inches (mm) | 12.4 (315) | 15.16 (385) | 2.76 (70) 22.2% |
| Circum. inches (mm) | 133.02 (3378.78) | 132.59 (3367.79) | -0.43 (-11) -0.3% |
| Sidewall Height inches (mm) | 9.92 (252) | 9.85 (250.25) | -0.07 (-1.75) -0.7% |
| Revolutions per mile (km) | 476.31 (295.96) | 477.86 (296.93) | 1.56 (0.97) 0.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.93 mph (32.08 km/h) |
| 25 mph (40.23 km/h) | 24.92 mph (40.1 km/h) |
| 30 mph (48.28 km/h) | 29.9 mph (48.12 km/h) |
| 35 mph (56.33 km/h) | 34.89 mph (56.14 km/h) |
| 40 mph (64.37 km/h) | 39.87 mph (64.16 km/h) |
| 45 mph (72.42 km/h) | 44.85 mph (72.18 km/h) |
| 50 mph (80.47 km/h) | 49.84 mph (80.21 km/h) |
| 55 mph (88.51 km/h) | 54.82 mph (88.23 km/h) |
| 60 mph (96.56 km/h) | 59.8 mph (96.25 km/h) |
| 65 mph (104.61 km/h) | 64.79 mph (104.27 km/h) |
| 70 mph (112.65 km/h) | 69.77 mph (112.29 km/h) |
| 75 mph (120.7 km/h) | 74.76 mph (120.31 km/h) |
| 80 mph (128.75 km/h) | 79.74 mph (128.33 km/h) |
| 85 mph (136.79 km/h) | 84.72 mph (136.35 km/h) |
| 90 mph (144.84 km/h) | 89.71 mph (144.37 km/h) |
| 95 mph (152.89 km/h) | 94.69 mph (152.39 km/h) |
| 100 mph (160.93 km/h) | 99.67 mph (160.41 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1216 | 1413 | 1521 | 1589 | 1661 | 1713 | 1770 | 1837 | 1930 | 2023 | 2127 | 2210 | 2360 | 2525 | 2655 | 2737 | 2784 | 2955 | 3193 | 3710 |
Better Fuel Economy Factory Ratios Increased Power
