Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 445/65-22.5 | 385/70-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 45.28 (1150) | 43.72 (1110.5) | -1.56 (-39.5) -3.4% |
| Width inches (mm) | 17.52 (445) | 15.16 (385) | -2.36 (-60) -13.5% |
| Circum. inches (mm) | 142.24 (3612.83) | 137.35 (3488.74) | -4.89 (-124.09) -3.4% |
| Sidewall Height inches (mm) | 11.39 (289.25) | 10.61 (269.5) | -0.78 (-19.75) -6.8% |
| Revolutions per mile (km) | 445.45 (276.79) | 461.3 (286.64) | 15.84 (9.85) 3.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.31 mph (31.08 km/h) |
| 25 mph (40.23 km/h) | 24.14 mph (38.85 km/h) |
| 30 mph (48.28 km/h) | 28.97 mph (46.62 km/h) |
| 35 mph (56.33 km/h) | 33.8 mph (54.39 km/h) |
| 40 mph (64.37 km/h) | 38.63 mph (62.16 km/h) |
| 45 mph (72.42 km/h) | 43.45 mph (69.93 km/h) |
| 50 mph (80.47 km/h) | 48.28 mph (77.7 km/h) |
| 55 mph (88.51 km/h) | 53.11 mph (85.47 km/h) |
| 60 mph (96.56 km/h) | 57.94 mph (93.24 km/h) |
| 65 mph (104.61 km/h) | 62.77 mph (101.01 km/h) |
| 70 mph (112.65 km/h) | 67.6 mph (108.78 km/h) |
| 75 mph (120.7 km/h) | 72.42 mph (116.56 km/h) |
| 80 mph (128.75 km/h) | 77.25 mph (124.33 km/h) |
| 85 mph (136.79 km/h) | 82.08 mph (132.1 km/h) |
| 90 mph (144.84 km/h) | 86.91 mph (139.87 km/h) |
| 95 mph (152.89 km/h) | 91.74 mph (147.64 km/h) |
| 100 mph (160.93 km/h) | 96.57 mph (155.41 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1174 | 1364 | 1469 | 1534 | 1604 | 1653 | 1708 | 1773 | 1863 | 1953 | 2053 | 2133 | 2278 | 2438 | 2563 | 2643 | 2688 | 2852 | 3082 | 3582 |
Better Fuel Economy Factory Ratios Increased Power
