Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/70-22.5 | 315/80-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 39.31 (998.5) | 42.34 (1075.5) | 3.03 (77) 7.7% |
| Width inches (mm) | 12.01 (305) | 12.4 (315) | 0.39 (10) 3.3% |
| Circum. inches (mm) | 123.5 (3136.88) | 133.02 (3378.78) | 9.52 (241.9) 7.7% |
| Sidewall Height inches (mm) | 8.41 (213.5) | 9.92 (252) | 1.52 (38.5) 18% |
| Revolutions per mile (km) | 513.04 (318.79) | 476.31 (295.96) | -36.73 (-22.82) -7.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.54 mph (34.67 km/h) |
| 25 mph (40.23 km/h) | 26.93 mph (43.34 km/h) |
| 30 mph (48.28 km/h) | 32.31 mph (52 km/h) |
| 35 mph (56.33 km/h) | 37.7 mph (60.67 km/h) |
| 40 mph (64.37 km/h) | 43.08 mph (69.34 km/h) |
| 45 mph (72.42 km/h) | 48.47 mph (78.01 km/h) |
| 50 mph (80.47 km/h) | 53.86 mph (86.67 km/h) |
| 55 mph (88.51 km/h) | 59.24 mph (95.34 km/h) |
| 60 mph (96.56 km/h) | 64.63 mph (104.01 km/h) |
| 65 mph (104.61 km/h) | 70.01 mph (112.67 km/h) |
| 70 mph (112.65 km/h) | 75.4 mph (121.34 km/h) |
| 75 mph (120.7 km/h) | 80.78 mph (130.01 km/h) |
| 80 mph (128.75 km/h) | 86.17 mph (138.68 km/h) |
| 85 mph (136.79 km/h) | 91.55 mph (147.34 km/h) |
| 90 mph (144.84 km/h) | 96.94 mph (156.01 km/h) |
| 95 mph (152.89 km/h) | 102.33 mph (164.68 km/h) |
| 100 mph (160.93 km/h) | 107.71 mph (173.35 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
