Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 425/65-22.5 | 315/80-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 44.25 (1124) | 42.34 (1075.5) | -1.91 (-48.5) -4.3% |
| Width inches (mm) | 16.73 (425) | 12.4 (315) | -4.33 (-110) -25.9% |
| Circum. inches (mm) | 139.02 (3531.15) | 133.02 (3378.78) | -6 (-152.37) -4.3% |
| Sidewall Height inches (mm) | 10.88 (276.25) | 9.92 (252) | -0.95 (-24.25) -8.8% |
| Revolutions per mile (km) | 455.76 (283.19) | 476.31 (295.96) | 20.55 (12.77) 4.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.14 mph (30.8 km/h) |
| 25 mph (40.23 km/h) | 23.92 mph (38.5 km/h) |
| 30 mph (48.28 km/h) | 28.71 mph (46.2 km/h) |
| 35 mph (56.33 km/h) | 33.49 mph (53.9 km/h) |
| 40 mph (64.37 km/h) | 38.27 mph (61.6 km/h) |
| 45 mph (72.42 km/h) | 43.06 mph (69.3 km/h) |
| 50 mph (80.47 km/h) | 47.84 mph (77 km/h) |
| 55 mph (88.51 km/h) | 52.63 mph (84.69 km/h) |
| 60 mph (96.56 km/h) | 57.41 mph (92.39 km/h) |
| 65 mph (104.61 km/h) | 62.2 mph (100.09 km/h) |
| 70 mph (112.65 km/h) | 66.98 mph (107.79 km/h) |
| 75 mph (120.7 km/h) | 71.76 mph (115.49 km/h) |
| 80 mph (128.75 km/h) | 76.55 mph (123.19 km/h) |
| 85 mph (136.79 km/h) | 81.33 mph (130.89 km/h) |
| 90 mph (144.84 km/h) | 86.12 mph (138.59 km/h) |
| 95 mph (152.89 km/h) | 90.9 mph (146.29 km/h) |
| 100 mph (160.93 km/h) | 95.69 mph (153.99 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
