Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 445/65-22.5 | 425/85-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 45.28 (1150) | 50.94 (1294) | 5.67 (144) 12.5% |
| Width inches (mm) | 17.52 (445) | 16.73 (425) | -0.79 (-20) -4.5% |
| Circum. inches (mm) | 142.24 (3612.83) | 160.05 (4065.22) | 17.81 (452.39) 12.5% |
| Sidewall Height inches (mm) | 11.39 (289.25) | 14.22 (361.25) | 2.83 (72) 24.9% |
| Revolutions per mile (km) | 445.45 (276.79) | 395.88 (245.99) | -49.57 (-30.8) -11.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.5 mph (36.22 km/h) |
| 25 mph (40.23 km/h) | 28.13 mph (45.27 km/h) |
| 30 mph (48.28 km/h) | 33.76 mph (54.33 km/h) |
| 35 mph (56.33 km/h) | 39.38 mph (63.38 km/h) |
| 40 mph (64.37 km/h) | 45.01 mph (72.43 km/h) |
| 45 mph (72.42 km/h) | 50.63 mph (81.49 km/h) |
| 50 mph (80.47 km/h) | 56.26 mph (90.54 km/h) |
| 55 mph (88.51 km/h) | 61.89 mph (99.6 km/h) |
| 60 mph (96.56 km/h) | 67.51 mph (108.65 km/h) |
| 65 mph (104.61 km/h) | 73.14 mph (117.71 km/h) |
| 70 mph (112.65 km/h) | 78.77 mph (126.76 km/h) |
| 75 mph (120.7 km/h) | 84.39 mph (135.81 km/h) |
| 80 mph (128.75 km/h) | 90.02 mph (144.87 km/h) |
| 85 mph (136.79 km/h) | 95.64 mph (153.92 km/h) |
| 90 mph (144.84 km/h) | 101.27 mph (162.98 km/h) |
| 95 mph (152.89 km/h) | 106.9 mph (172.03 km/h) |
| 100 mph (160.93 km/h) | 112.52 mph (181.09 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
