Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/80-17 | 405/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.13 (663.8) | 42.51 (1079.8) | 16.38 (416) 62.7% |
| Width inches (mm) | 5.71 (145) | 15.94 (405) | 10.24 (260) 179.3% |
| Circum. inches (mm) | 82.1 (2085.39) | 133.55 (3392.29) | 51.45 (1306.9) 62.7% |
| Sidewall Height inches (mm) | 4.57 (116) | 12.76 (324) | 8.19 (208) 179.3% |
| Revolutions per mile (km) | 771.72 (479.53) | 474.41 (294.79) | -297.31 (-184.74) -38.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 32.53 mph (52.36 km/h) |
| 25 mph (40.23 km/h) | 40.67 mph (65.45 km/h) |
| 30 mph (48.28 km/h) | 48.8 mph (78.54 km/h) |
| 35 mph (56.33 km/h) | 56.93 mph (91.63 km/h) |
| 40 mph (64.37 km/h) | 65.07 mph (104.72 km/h) |
| 45 mph (72.42 km/h) | 73.2 mph (117.81 km/h) |
| 50 mph (80.47 km/h) | 81.33 mph (130.9 km/h) |
| 55 mph (88.51 km/h) | 89.47 mph (143.99 km/h) |
| 60 mph (96.56 km/h) | 97.6 mph (157.07 km/h) |
| 65 mph (104.61 km/h) | 105.74 mph (170.16 km/h) |
| 70 mph (112.65 km/h) | 113.87 mph (183.25 km/h) |
| 75 mph (120.7 km/h) | 122 mph (196.34 km/h) |
| 80 mph (128.75 km/h) | 130.14 mph (209.43 km/h) |
| 85 mph (136.79 km/h) | 138.27 mph (222.52 km/h) |
| 90 mph (144.84 km/h) | 146.4 mph (235.61 km/h) |
| 95 mph (152.89 km/h) | 154.54 mph (248.7 km/h) |
| 100 mph (160.93 km/h) | 162.67 mph (261.79 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1207 | 1403 | 1510 | 1577 | 1649 | 1700 | 1757 | 1824 | 1916 | 2009 | 2111 | 2194 | 2343 | 2507 | 2635 | 2718 | 2764 | 2933 | 3170 | 3684 |
Better Fuel Economy Factory Ratios Increased Power
