Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/80-22.5 | 445/50-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 42.34 (1075.5) | 40.02 (1016.5) | -2.32 (-59) -5.5% |
| Width inches (mm) | 12.4 (315) | 17.52 (445) | 5.12 (130) 41.3% |
| Circum. inches (mm) | 133.02 (3378.78) | 125.73 (3193.43) | -7.3 (-185.35) -5.5% |
| Sidewall Height inches (mm) | 9.92 (252) | 8.76 (222.5) | -1.16 (-29.5) -11.7% |
| Revolutions per mile (km) | 476.31 (295.96) | 503.95 (313.14) | 27.65 (17.18) 5.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.9 mph (30.42 km/h) |
| 25 mph (40.23 km/h) | 23.63 mph (38.03 km/h) |
| 30 mph (48.28 km/h) | 28.35 mph (45.63 km/h) |
| 35 mph (56.33 km/h) | 33.08 mph (53.24 km/h) |
| 40 mph (64.37 km/h) | 37.81 mph (60.84 km/h) |
| 45 mph (72.42 km/h) | 42.53 mph (68.45 km/h) |
| 50 mph (80.47 km/h) | 47.26 mph (76.05 km/h) |
| 55 mph (88.51 km/h) | 51.98 mph (83.66 km/h) |
| 60 mph (96.56 km/h) | 56.71 mph (91.26 km/h) |
| 65 mph (104.61 km/h) | 61.43 mph (98.87 km/h) |
| 70 mph (112.65 km/h) | 66.16 mph (106.47 km/h) |
| 75 mph (120.7 km/h) | 70.89 mph (114.08 km/h) |
| 80 mph (128.75 km/h) | 75.61 mph (121.68 km/h) |
| 85 mph (136.79 km/h) | 80.34 mph (129.29 km/h) |
| 90 mph (144.84 km/h) | 85.06 mph (136.9 km/h) |
| 95 mph (152.89 km/h) | 89.79 mph (144.5 km/h) |
| 100 mph (160.93 km/h) | 94.51 mph (152.11 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
