Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 445/65-22.5 | 315/80-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 45.28 (1150) | 42.34 (1075.5) | -2.93 (-74.5) -6.5% |
| Width inches (mm) | 17.52 (445) | 12.4 (315) | -5.12 (-130) -29.2% |
| Circum. inches (mm) | 142.24 (3612.83) | 133.02 (3378.78) | -9.21 (-234.05) -6.5% |
| Sidewall Height inches (mm) | 11.39 (289.25) | 9.92 (252) | -1.47 (-37.25) -12.9% |
| Revolutions per mile (km) | 445.45 (276.79) | 476.31 (295.96) | 30.86 (19.17) 6.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.7 mph (30.1 km/h) |
| 25 mph (40.23 km/h) | 23.38 mph (37.63 km/h) |
| 30 mph (48.28 km/h) | 28.06 mph (45.15 km/h) |
| 35 mph (56.33 km/h) | 32.73 mph (52.68 km/h) |
| 40 mph (64.37 km/h) | 37.41 mph (60.2 km/h) |
| 45 mph (72.42 km/h) | 42.08 mph (67.73 km/h) |
| 50 mph (80.47 km/h) | 46.76 mph (75.25 km/h) |
| 55 mph (88.51 km/h) | 51.44 mph (82.78 km/h) |
| 60 mph (96.56 km/h) | 56.11 mph (90.31 km/h) |
| 65 mph (104.61 km/h) | 60.79 mph (97.83 km/h) |
| 70 mph (112.65 km/h) | 65.47 mph (105.36 km/h) |
| 75 mph (120.7 km/h) | 70.14 mph (112.88 km/h) |
| 80 mph (128.75 km/h) | 74.82 mph (120.41 km/h) |
| 85 mph (136.79 km/h) | 79.49 mph (127.93 km/h) |
| 90 mph (144.84 km/h) | 84.17 mph (135.46 km/h) |
| 95 mph (152.89 km/h) | 88.85 mph (142.98 km/h) |
| 100 mph (160.93 km/h) | 93.52 mph (150.51 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1212 | 1408 | 1516 | 1583 | 1656 | 1707 | 1764 | 1831 | 1924 | 2017 | 2120 | 2202 | 2352 | 2517 | 2646 | 2729 | 2775 | 2945 | 3182 | 3698 |
Better Fuel Economy Factory Ratios Increased Power
