Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 80/70-17 | 290/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.41 (543.8) | 33.98 (863.2) | 12.57 (319.4) 58.7% |
| Width inches (mm) | 3.15 (80) | 11.42 (290) | 8.27 (210) 262.5% |
| Circum. inches (mm) | 67.26 (1708.4) | 106.76 (2711.82) | 39.5 (1003.42) 58.7% |
| Sidewall Height inches (mm) | 2.2 (56) | 7.99 (203) | 5.79 (147) 262.5% |
| Revolutions per mile (km) | 942.02 (585.34) | 593.45 (368.75) | -348.56 (-216.59) -37% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 31.75 mph (51.09 km/h) |
| 25 mph (40.23 km/h) | 39.68 mph (63.86 km/h) |
| 30 mph (48.28 km/h) | 47.62 mph (76.64 km/h) |
| 35 mph (56.33 km/h) | 55.56 mph (89.41 km/h) |
| 40 mph (64.37 km/h) | 63.49 mph (102.18 km/h) |
| 45 mph (72.42 km/h) | 71.43 mph (114.96 km/h) |
| 50 mph (80.47 km/h) | 79.37 mph (127.73 km/h) |
| 55 mph (88.51 km/h) | 87.3 mph (140.5 km/h) |
| 60 mph (96.56 km/h) | 95.24 mph (153.28 km/h) |
| 65 mph (104.61 km/h) | 103.18 mph (166.05 km/h) |
| 70 mph (112.65 km/h) | 111.11 mph (178.82 km/h) |
| 75 mph (120.7 km/h) | 119.05 mph (191.59 km/h) |
| 80 mph (128.75 km/h) | 126.99 mph (204.37 km/h) |
| 85 mph (136.79 km/h) | 134.92 mph (217.14 km/h) |
| 90 mph (144.84 km/h) | 142.86 mph (229.91 km/h) |
| 95 mph (152.89 km/h) | 150.8 mph (242.69 km/h) |
| 100 mph (160.93 km/h) | 158.73 mph (255.46 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1510 | 1754 | 1889 | 1973 | 2063 | 2127 | 2198 | 2281 | 2397 | 2513 | 2641 | 2744 | 2930 | 3136 | 3297 | 3400 | 3457 | 3670 | 3965 | 4608 |
Better Fuel Economy Factory Ratios Increased Power
