Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/25-19 | 315/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.2 (640.1) | 31.64 (803.7) | 6.44 (163.6) 25.6% |
| Width inches (mm) | 12.4 (315) | 12.4 (315) | 0 (0) 0% |
| Circum. inches (mm) | 79.17 (2010.93) | 99.41 (2524.9) | 20.23 (513.96) 25.6% |
| Sidewall Height inches (mm) | 3.1 (78.75) | 6.82 (173.25) | 3.72 (94.5) 120% |
| Revolutions per mile (km) | 800.3 (497.28) | 637.39 (396.05) | -162.91 (-101.23) -20.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.11 mph (40.41 km/h) |
| 25 mph (40.23 km/h) | 31.39 mph (50.52 km/h) |
| 30 mph (48.28 km/h) | 37.67 mph (60.62 km/h) |
| 35 mph (56.33 km/h) | 43.95 mph (70.72 km/h) |
| 40 mph (64.37 km/h) | 50.22 mph (80.83 km/h) |
| 45 mph (72.42 km/h) | 56.5 mph (90.93 km/h) |
| 50 mph (80.47 km/h) | 62.78 mph (101.03 km/h) |
| 55 mph (88.51 km/h) | 69.06 mph (111.14 km/h) |
| 60 mph (96.56 km/h) | 75.34 mph (121.24 km/h) |
| 65 mph (104.61 km/h) | 81.61 mph (131.34 km/h) |
| 70 mph (112.65 km/h) | 87.89 mph (141.45 km/h) |
| 75 mph (120.7 km/h) | 94.17 mph (151.55 km/h) |
| 80 mph (128.75 km/h) | 100.45 mph (161.65 km/h) |
| 85 mph (136.79 km/h) | 106.72 mph (171.76 km/h) |
| 90 mph (144.84 km/h) | 113 mph (181.86 km/h) |
| 95 mph (152.89 km/h) | 119.28 mph (191.96 km/h) |
| 100 mph (160.93 km/h) | 125.56 mph (202.07 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1622 | 1884 | 2029 | 2119 | 2216 | 2285 | 2361 | 2450 | 2575 | 2699 | 2837 | 2947 | 3147 | 3368 | 3541 | 3651 | 3713 | 3941 | 4259 | 4949 |
Better Fuel Economy Factory Ratios Increased Power
