Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 80/70-17 | 315/75-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.41 (543.8) | 35.6 (904.3) | 14.19 (360.5) 66.3% |
| Width inches (mm) | 3.15 (80) | 12.4 (315) | 9.25 (235) 293.8% |
| Circum. inches (mm) | 67.26 (1708.4) | 111.85 (2840.94) | 44.59 (1132.54) 66.3% |
| Sidewall Height inches (mm) | 2.2 (56) | 9.3 (236.25) | 7.1 (180.25) 321.9% |
| Revolutions per mile (km) | 942.02 (585.34) | 566.48 (352) | -375.54 (-233.35) -39.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 33.26 mph (53.52 km/h) |
| 25 mph (40.23 km/h) | 41.57 mph (66.91 km/h) |
| 30 mph (48.28 km/h) | 49.89 mph (80.29 km/h) |
| 35 mph (56.33 km/h) | 58.2 mph (93.67 km/h) |
| 40 mph (64.37 km/h) | 66.52 mph (107.05 km/h) |
| 45 mph (72.42 km/h) | 74.83 mph (120.43 km/h) |
| 50 mph (80.47 km/h) | 83.15 mph (133.81 km/h) |
| 55 mph (88.51 km/h) | 91.46 mph (147.19 km/h) |
| 60 mph (96.56 km/h) | 99.78 mph (160.57 km/h) |
| 65 mph (104.61 km/h) | 108.09 mph (173.95 km/h) |
| 70 mph (112.65 km/h) | 116.4 mph (187.34 km/h) |
| 75 mph (120.7 km/h) | 124.72 mph (200.72 km/h) |
| 80 mph (128.75 km/h) | 133.03 mph (214.1 km/h) |
| 85 mph (136.79 km/h) | 141.35 mph (227.48 km/h) |
| 90 mph (144.84 km/h) | 149.66 mph (240.86 km/h) |
| 95 mph (152.89 km/h) | 157.98 mph (254.24 km/h) |
| 100 mph (160.93 km/h) | 166.29 mph (267.62 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
