Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/55-17 | 190/60-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.8 (629.8) | 25.98 (659.8) | 1.18 (30) 4.8% |
| Width inches (mm) | 7.09 (180) | 7.48 (190) | 0.39 (10) 5.6% |
| Circum. inches (mm) | 77.9 (1978.58) | 81.61 (2072.82) | 3.71 (94.25) 4.8% |
| Sidewall Height inches (mm) | 3.9 (99) | 4.49 (114) | 0.59 (15) 15.2% |
| Revolutions per mile (km) | 813.39 (505.41) | 776.4 (482.43) | -36.98 (-22.98) -4.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.95 mph (33.72 km/h) |
| 25 mph (40.23 km/h) | 26.19 mph (42.15 km/h) |
| 30 mph (48.28 km/h) | 31.43 mph (50.58 km/h) |
| 35 mph (56.33 km/h) | 36.67 mph (59.01 km/h) |
| 40 mph (64.37 km/h) | 41.91 mph (67.44 km/h) |
| 45 mph (72.42 km/h) | 47.14 mph (75.87 km/h) |
| 50 mph (80.47 km/h) | 52.38 mph (84.3 km/h) |
| 55 mph (88.51 km/h) | 57.62 mph (92.73 km/h) |
| 60 mph (96.56 km/h) | 62.86 mph (101.16 km/h) |
| 65 mph (104.61 km/h) | 68.1 mph (109.59 km/h) |
| 70 mph (112.65 km/h) | 73.33 mph (118.02 km/h) |
| 75 mph (120.7 km/h) | 78.57 mph (126.45 km/h) |
| 80 mph (128.75 km/h) | 83.81 mph (134.88 km/h) |
| 85 mph (136.79 km/h) | 89.05 mph (143.31 km/h) |
| 90 mph (144.84 km/h) | 94.29 mph (151.74 km/h) |
| 95 mph (152.89 km/h) | 99.53 mph (160.17 km/h) |
| 100 mph (160.93 km/h) | 104.76 mph (168.6 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1976 | 2295 | 2472 | 2581 | 2699 | 2783 | 2875 | 2985 | 3136 | 3287 | 3456 | 3590 | 3834 | 4103 | 4313 | 4448 | 4523 | 4801 | 5188 | 6028 |
Better Fuel Economy Factory Ratios Increased Power
