Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/30-30 | 315/80-22.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.44 (951) | 42.34 (1075.5) | 4.9 (124.5) 13.1% |
| Width inches (mm) | 12.4 (315) | 12.4 (315) | 0 (0) 0% |
| Circum. inches (mm) | 117.62 (2987.65) | 133.02 (3378.78) | 15.4 (391.13) 13.1% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 9.92 (252) | 6.2 (157.5) 166.7% |
| Revolutions per mile (km) | 538.66 (334.71) | 476.31 (295.96) | -62.36 (-38.75) -11.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.62 mph (36.4 km/h) |
| 25 mph (40.23 km/h) | 28.27 mph (45.5 km/h) |
| 30 mph (48.28 km/h) | 33.93 mph (54.6 km/h) |
| 35 mph (56.33 km/h) | 39.58 mph (63.7 km/h) |
| 40 mph (64.37 km/h) | 45.24 mph (72.8 km/h) |
| 45 mph (72.42 km/h) | 50.89 mph (81.9 km/h) |
| 50 mph (80.47 km/h) | 56.55 mph (91 km/h) |
| 55 mph (88.51 km/h) | 62.2 mph (100.1 km/h) |
| 60 mph (96.56 km/h) | 67.85 mph (109.2 km/h) |
| 65 mph (104.61 km/h) | 73.51 mph (118.3 km/h) |
| 70 mph (112.65 km/h) | 79.16 mph (127.4 km/h) |
| 75 mph (120.7 km/h) | 84.82 mph (136.5 km/h) |
| 80 mph (128.75 km/h) | 90.47 mph (145.6 km/h) |
| 85 mph (136.79 km/h) | 96.13 mph (154.7 km/h) |
| 90 mph (144.84 km/h) | 101.78 mph (163.8 km/h) |
| 95 mph (152.89 km/h) | 107.44 mph (172.9 km/h) |
| 100 mph (160.93 km/h) | 113.09 mph (182 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
