Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/40-17 | 315/40-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.66 (651.8) | 26.92 (683.8) | 1.26 (32) 4.9% |
| Width inches (mm) | 10.83 (275) | 12.4 (315) | 1.57 (40) 14.5% |
| Circum. inches (mm) | 80.62 (2047.69) | 84.58 (2148.22) | 3.96 (100.53) 4.9% |
| Sidewall Height inches (mm) | 4.33 (110) | 4.96 (126) | 0.63 (16) 14.5% |
| Revolutions per mile (km) | 785.93 (488.35) | 749.15 (465.5) | -36.78 (-22.85) -4.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.98 mph (33.77 km/h) |
| 25 mph (40.23 km/h) | 26.23 mph (42.21 km/h) |
| 30 mph (48.28 km/h) | 31.47 mph (50.65 km/h) |
| 35 mph (56.33 km/h) | 36.72 mph (59.09 km/h) |
| 40 mph (64.37 km/h) | 41.96 mph (67.53 km/h) |
| 45 mph (72.42 km/h) | 47.21 mph (75.98 km/h) |
| 50 mph (80.47 km/h) | 52.45 mph (84.42 km/h) |
| 55 mph (88.51 km/h) | 57.7 mph (92.86 km/h) |
| 60 mph (96.56 km/h) | 62.95 mph (101.3 km/h) |
| 65 mph (104.61 km/h) | 68.19 mph (109.74 km/h) |
| 70 mph (112.65 km/h) | 73.44 mph (118.19 km/h) |
| 75 mph (120.7 km/h) | 78.68 mph (126.63 km/h) |
| 80 mph (128.75 km/h) | 83.93 mph (135.07 km/h) |
| 85 mph (136.79 km/h) | 89.17 mph (143.51 km/h) |
| 90 mph (144.84 km/h) | 94.42 mph (151.95 km/h) |
| 95 mph (152.89 km/h) | 99.66 mph (160.39 km/h) |
| 100 mph (160.93 km/h) | 104.91 mph (168.84 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1906 | 2215 | 2385 | 2491 | 2604 | 2685 | 2774 | 2880 | 3026 | 3172 | 3334 | 3464 | 3699 | 3959 | 4162 | 4292 | 4365 | 4632 | 5005 | 5817 |
Better Fuel Economy Factory Ratios Increased Power
