Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/40-17 | 315/50-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.92 (683.8) | 29.4 (746.8) | 2.48 (63) 9.2% |
| Width inches (mm) | 12.4 (315) | 12.4 (315) | 0 (0) 0% |
| Circum. inches (mm) | 84.58 (2148.22) | 92.37 (2346.14) | 7.79 (197.92) 9.2% |
| Sidewall Height inches (mm) | 4.96 (126) | 6.2 (157.5) | 1.24 (31.5) 25% |
| Revolutions per mile (km) | 749.15 (465.5) | 685.95 (426.23) | -63.2 (-39.27) -8.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.84 mph (35.15 km/h) |
| 25 mph (40.23 km/h) | 27.3 mph (43.94 km/h) |
| 30 mph (48.28 km/h) | 32.76 mph (52.73 km/h) |
| 35 mph (56.33 km/h) | 38.22 mph (61.52 km/h) |
| 40 mph (64.37 km/h) | 43.69 mph (70.3 km/h) |
| 45 mph (72.42 km/h) | 49.15 mph (79.09 km/h) |
| 50 mph (80.47 km/h) | 54.61 mph (87.88 km/h) |
| 55 mph (88.51 km/h) | 60.07 mph (96.67 km/h) |
| 60 mph (96.56 km/h) | 65.53 mph (105.46 km/h) |
| 65 mph (104.61 km/h) | 70.99 mph (114.25 km/h) |
| 70 mph (112.65 km/h) | 76.45 mph (123.03 km/h) |
| 75 mph (120.7 km/h) | 81.91 mph (131.82 km/h) |
| 80 mph (128.75 km/h) | 87.37 mph (140.61 km/h) |
| 85 mph (136.79 km/h) | 92.83 mph (149.4 km/h) |
| 90 mph (144.84 km/h) | 98.29 mph (158.19 km/h) |
| 95 mph (152.89 km/h) | 103.75 mph (166.97 km/h) |
| 100 mph (160.93 km/h) | 109.21 mph (175.76 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1746 | 2028 | 2184 | 2280 | 2384 | 2459 | 2540 | 2637 | 2771 | 2904 | 3053 | 3172 | 3387 | 3625 | 3811 | 3930 | 3996 | 4241 | 4583 | 5326 |
Better Fuel Economy Factory Ratios Increased Power
