Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/80-22.5 | 315/80-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.3 (947.5) | 42.34 (1075.5) | 5.04 (128) 13.5% |
| Width inches (mm) | 9.25 (235) | 12.4 (315) | 3.15 (80) 34% |
| Circum. inches (mm) | 117.19 (2976.66) | 133.02 (3378.78) | 15.83 (402.12) 13.5% |
| Sidewall Height inches (mm) | 7.4 (188) | 9.92 (252) | 2.52 (64) 34% |
| Revolutions per mile (km) | 540.65 (335.95) | 476.31 (295.96) | -64.35 (-39.98) -11.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.7 mph (36.54 km/h) |
| 25 mph (40.23 km/h) | 28.38 mph (45.67 km/h) |
| 30 mph (48.28 km/h) | 34.05 mph (54.8 km/h) |
| 35 mph (56.33 km/h) | 39.73 mph (63.94 km/h) |
| 40 mph (64.37 km/h) | 45.4 mph (73.07 km/h) |
| 45 mph (72.42 km/h) | 51.08 mph (82.2 km/h) |
| 50 mph (80.47 km/h) | 56.75 mph (91.34 km/h) |
| 55 mph (88.51 km/h) | 62.43 mph (100.47 km/h) |
| 60 mph (96.56 km/h) | 68.11 mph (109.61 km/h) |
| 65 mph (104.61 km/h) | 73.78 mph (118.74 km/h) |
| 70 mph (112.65 km/h) | 79.46 mph (127.87 km/h) |
| 75 mph (120.7 km/h) | 85.13 mph (137.01 km/h) |
| 80 mph (128.75 km/h) | 90.81 mph (146.14 km/h) |
| 85 mph (136.79 km/h) | 96.48 mph (155.27 km/h) |
| 90 mph (144.84 km/h) | 102.16 mph (164.41 km/h) |
| 95 mph (152.89 km/h) | 107.83 mph (173.54 km/h) |
| 100 mph (160.93 km/h) | 113.51 mph (182.68 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
