Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 140/70-17 | 180/55-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.72 (627.8) | 24.8 (629.8) | 0.08 (2) 0.3% |
| Width inches (mm) | 5.51 (140) | 7.09 (180) | 1.57 (40) 28.6% |
| Circum. inches (mm) | 77.65 (1972.29) | 77.9 (1978.58) | 0.25 (6.28) 0.3% |
| Sidewall Height inches (mm) | 3.86 (98) | 3.9 (99) | 0.04 (1) 1% |
| Revolutions per mile (km) | 815.98 (507.02) | 813.39 (505.41) | -2.59 (-1.61) -0.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.06 mph (32.29 km/h) |
| 25 mph (40.23 km/h) | 25.08 mph (40.36 km/h) |
| 30 mph (48.28 km/h) | 30.1 mph (48.43 km/h) |
| 35 mph (56.33 km/h) | 35.11 mph (56.51 km/h) |
| 40 mph (64.37 km/h) | 40.13 mph (64.58 km/h) |
| 45 mph (72.42 km/h) | 45.14 mph (72.65 km/h) |
| 50 mph (80.47 km/h) | 50.16 mph (80.72 km/h) |
| 55 mph (88.51 km/h) | 55.18 mph (88.8 km/h) |
| 60 mph (96.56 km/h) | 60.19 mph (96.87 km/h) |
| 65 mph (104.61 km/h) | 65.21 mph (104.94 km/h) |
| 70 mph (112.65 km/h) | 70.22 mph (113.01 km/h) |
| 75 mph (120.7 km/h) | 75.24 mph (121.09 km/h) |
| 80 mph (128.75 km/h) | 80.25 mph (129.16 km/h) |
| 85 mph (136.79 km/h) | 85.27 mph (137.23 km/h) |
| 90 mph (144.84 km/h) | 90.29 mph (145.3 km/h) |
| 95 mph (152.89 km/h) | 95.3 mph (153.38 km/h) |
| 100 mph (160.93 km/h) | 100.32 mph (161.45 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2070 | 2405 | 2590 | 2704 | 2827 | 2915 | 3012 | 3127 | 3285 | 3444 | 3620 | 3761 | 4017 | 4298 | 4519 | 4660 | 4739 | 5029 | 5435 | 6315 |
Better Fuel Economy Factory Ratios Increased Power
