Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 445/50-22.5 | 385/65-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 40.02 (1016.5) | 42.2 (1072) | 2.19 (55.5) 5.5% |
| Width inches (mm) | 17.52 (445) | 15.16 (385) | -2.36 (-60) -13.5% |
| Circum. inches (mm) | 125.73 (3193.43) | 132.59 (3367.79) | 6.86 (174.36) 5.5% |
| Sidewall Height inches (mm) | 8.76 (222.5) | 9.85 (250.25) | 1.09 (27.75) 12.5% |
| Revolutions per mile (km) | 503.95 (313.14) | 477.86 (296.93) | -26.09 (-16.21) -5.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.09 mph (33.94 km/h) |
| 25 mph (40.23 km/h) | 26.36 mph (42.43 km/h) |
| 30 mph (48.28 km/h) | 31.64 mph (50.92 km/h) |
| 35 mph (56.33 km/h) | 36.91 mph (59.4 km/h) |
| 40 mph (64.37 km/h) | 42.18 mph (67.89 km/h) |
| 45 mph (72.42 km/h) | 47.46 mph (76.37 km/h) |
| 50 mph (80.47 km/h) | 52.73 mph (84.86 km/h) |
| 55 mph (88.51 km/h) | 58 mph (93.35 km/h) |
| 60 mph (96.56 km/h) | 63.28 mph (101.83 km/h) |
| 65 mph (104.61 km/h) | 68.55 mph (110.32 km/h) |
| 70 mph (112.65 km/h) | 73.82 mph (118.81 km/h) |
| 75 mph (120.7 km/h) | 79.09 mph (127.29 km/h) |
| 80 mph (128.75 km/h) | 84.37 mph (135.78 km/h) |
| 85 mph (136.79 km/h) | 89.64 mph (144.26 km/h) |
| 90 mph (144.84 km/h) | 94.91 mph (152.75 km/h) |
| 95 mph (152.89 km/h) | 100.19 mph (161.24 km/h) |
| 100 mph (160.93 km/h) | 105.46 mph (169.72 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
