Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 385/65-22.5 | 445/50-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 42.2 (1072) | 40.02 (1016.5) | -2.19 (-55.5) -5.2% |
| Width inches (mm) | 15.16 (385) | 17.52 (445) | 2.36 (60) 15.6% |
| Circum. inches (mm) | 132.59 (3367.79) | 125.73 (3193.43) | -6.86 (-174.36) -5.2% |
| Sidewall Height inches (mm) | 9.85 (250.25) | 8.76 (222.5) | -1.09 (-27.75) -11.1% |
| Revolutions per mile (km) | 477.86 (296.93) | 503.95 (313.14) | 26.09 (16.21) 5.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.96 mph (30.52 km/h) |
| 25 mph (40.23 km/h) | 23.71 mph (38.15 km/h) |
| 30 mph (48.28 km/h) | 28.45 mph (45.78 km/h) |
| 35 mph (56.33 km/h) | 33.19 mph (53.41 km/h) |
| 40 mph (64.37 km/h) | 37.93 mph (61.04 km/h) |
| 45 mph (72.42 km/h) | 42.67 mph (68.67 km/h) |
| 50 mph (80.47 km/h) | 47.41 mph (76.3 km/h) |
| 55 mph (88.51 km/h) | 52.15 mph (83.93 km/h) |
| 60 mph (96.56 km/h) | 56.89 mph (91.56 km/h) |
| 65 mph (104.61 km/h) | 61.63 mph (99.19 km/h) |
| 70 mph (112.65 km/h) | 66.38 mph (106.82 km/h) |
| 75 mph (120.7 km/h) | 71.12 mph (114.45 km/h) |
| 80 mph (128.75 km/h) | 75.86 mph (122.08 km/h) |
| 85 mph (136.79 km/h) | 80.6 mph (129.71 km/h) |
| 90 mph (144.84 km/h) | 85.34 mph (137.34 km/h) |
| 95 mph (152.89 km/h) | 90.08 mph (144.97 km/h) |
| 100 mph (160.93 km/h) | 94.82 mph (152.6 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1282 | 1490 | 1604 | 1675 | 1752 | 1806 | 1866 | 1937 | 2036 | 2134 | 2243 | 2330 | 2489 | 2663 | 2800 | 2887 | 2936 | 3116 | 3367 | 3913 |
Better Fuel Economy Factory Ratios Increased Power
