Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 190/55-17 | 180/55-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.23 (640.8) | 24.8 (629.8) | -0.43 (-11) -1.7% |
| Width inches (mm) | 7.48 (190) | 7.09 (180) | -0.39 (-10) -5.3% |
| Circum. inches (mm) | 79.26 (2013.13) | 77.9 (1978.58) | -1.36 (-34.56) -1.7% |
| Sidewall Height inches (mm) | 4.11 (104.5) | 3.9 (99) | -0.22 (-5.5) -5.3% |
| Revolutions per mile (km) | 799.42 (496.74) | 813.39 (505.41) | 13.96 (8.68) 1.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.66 mph (31.63 km/h) |
| 25 mph (40.23 km/h) | 24.57 mph (39.54 km/h) |
| 30 mph (48.28 km/h) | 29.49 mph (47.45 km/h) |
| 35 mph (56.33 km/h) | 34.4 mph (55.36 km/h) |
| 40 mph (64.37 km/h) | 39.31 mph (63.27 km/h) |
| 45 mph (72.42 km/h) | 44.23 mph (71.18 km/h) |
| 50 mph (80.47 km/h) | 49.14 mph (79.09 km/h) |
| 55 mph (88.51 km/h) | 54.06 mph (86.99 km/h) |
| 60 mph (96.56 km/h) | 58.97 mph (94.9 km/h) |
| 65 mph (104.61 km/h) | 63.88 mph (102.81 km/h) |
| 70 mph (112.65 km/h) | 68.8 mph (110.72 km/h) |
| 75 mph (120.7 km/h) | 73.71 mph (118.63 km/h) |
| 80 mph (128.75 km/h) | 78.63 mph (126.54 km/h) |
| 85 mph (136.79 km/h) | 83.54 mph (134.45 km/h) |
| 90 mph (144.84 km/h) | 88.46 mph (142.35 km/h) |
| 95 mph (152.89 km/h) | 93.37 mph (150.26 km/h) |
| 100 mph (160.93 km/h) | 98.28 mph (158.17 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
