Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/70-17 | 315/75-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.06 (788.8) | 35.6 (904.3) | 4.55 (115.5) 14.6% |
| Width inches (mm) | 10.04 (255) | 12.4 (315) | 2.36 (60) 23.5% |
| Circum. inches (mm) | 97.56 (2478.09) | 111.85 (2840.94) | 14.29 (362.85) 14.6% |
| Sidewall Height inches (mm) | 7.03 (178.5) | 9.3 (236.25) | 2.27 (57.75) 32.4% |
| Revolutions per mile (km) | 649.43 (403.54) | 566.48 (352) | -82.95 (-51.54) -12.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.93 mph (36.9 km/h) |
| 25 mph (40.23 km/h) | 28.66 mph (46.12 km/h) |
| 30 mph (48.28 km/h) | 34.39 mph (55.35 km/h) |
| 35 mph (56.33 km/h) | 40.12 mph (64.57 km/h) |
| 40 mph (64.37 km/h) | 45.86 mph (73.8 km/h) |
| 45 mph (72.42 km/h) | 51.59 mph (83.02 km/h) |
| 50 mph (80.47 km/h) | 57.32 mph (92.25 km/h) |
| 55 mph (88.51 km/h) | 63.05 mph (101.47 km/h) |
| 60 mph (96.56 km/h) | 68.79 mph (110.7 km/h) |
| 65 mph (104.61 km/h) | 74.52 mph (119.92 km/h) |
| 70 mph (112.65 km/h) | 80.25 mph (129.15 km/h) |
| 75 mph (120.7 km/h) | 85.98 mph (138.37 km/h) |
| 80 mph (128.75 km/h) | 91.71 mph (147.6 km/h) |
| 85 mph (136.79 km/h) | 97.45 mph (156.82 km/h) |
| 90 mph (144.84 km/h) | 103.18 mph (166.05 km/h) |
| 95 mph (152.89 km/h) | 108.91 mph (175.27 km/h) |
| 100 mph (160.93 km/h) | 114.64 mph (184.5 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1442 | 1675 | 1804 | 1883 | 1969 | 2030 | 2098 | 2178 | 2288 | 2399 | 2521 | 2619 | 2797 | 2994 | 3147 | 3245 | 3300 | 3503 | 3785 | 4398 |
Better Fuel Economy Factory Ratios Increased Power
