Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 160/60-18 | 180/55-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.56 (649.2) | 24.8 (629.8) | -0.76 (-19.4) -3% |
| Width inches (mm) | 6.3 (160) | 7.09 (180) | 0.79 (20) 12.5% |
| Circum. inches (mm) | 80.3 (2039.52) | 77.9 (1978.58) | -2.4 (-60.95) -3% |
| Sidewall Height inches (mm) | 3.78 (96) | 3.9 (99) | 0.12 (3) 3.1% |
| Revolutions per mile (km) | 789.08 (490.31) | 813.39 (505.41) | 24.31 (15.1) 3.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.4 mph (31.23 km/h) |
| 25 mph (40.23 km/h) | 24.25 mph (39.03 km/h) |
| 30 mph (48.28 km/h) | 29.1 mph (46.84 km/h) |
| 35 mph (56.33 km/h) | 33.95 mph (54.64 km/h) |
| 40 mph (64.37 km/h) | 38.8 mph (62.45 km/h) |
| 45 mph (72.42 km/h) | 43.66 mph (70.26 km/h) |
| 50 mph (80.47 km/h) | 48.51 mph (78.06 km/h) |
| 55 mph (88.51 km/h) | 53.36 mph (85.87 km/h) |
| 60 mph (96.56 km/h) | 58.21 mph (93.68 km/h) |
| 65 mph (104.61 km/h) | 63.06 mph (101.48 km/h) |
| 70 mph (112.65 km/h) | 67.91 mph (109.29 km/h) |
| 75 mph (120.7 km/h) | 72.76 mph (117.09 km/h) |
| 80 mph (128.75 km/h) | 77.61 mph (124.9 km/h) |
| 85 mph (136.79 km/h) | 82.46 mph (132.71 km/h) |
| 90 mph (144.84 km/h) | 87.31 mph (140.51 km/h) |
| 95 mph (152.89 km/h) | 92.16 mph (148.32 km/h) |
| 100 mph (160.93 km/h) | 97.01 mph (156.13 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
