Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/55-17 | 170/60-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.8 (629.8) | 25.03 (635.8) | 0.24 (6) 1% |
| Width inches (mm) | 7.09 (180) | 6.69 (170) | -0.39 (-10) -5.6% |
| Circum. inches (mm) | 77.9 (1978.58) | 78.64 (1997.42) | 0.74 (18.85) 1% |
| Sidewall Height inches (mm) | 3.9 (99) | 4.02 (102) | 0.12 (3) 3% |
| Revolutions per mile (km) | 813.39 (505.41) | 805.71 (500.64) | -7.68 (-4.77) -0.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.19 mph (32.49 km/h) |
| 25 mph (40.23 km/h) | 25.24 mph (40.62 km/h) |
| 30 mph (48.28 km/h) | 30.29 mph (48.74 km/h) |
| 35 mph (56.33 km/h) | 35.33 mph (56.86 km/h) |
| 40 mph (64.37 km/h) | 40.38 mph (64.99 km/h) |
| 45 mph (72.42 km/h) | 45.43 mph (73.11 km/h) |
| 50 mph (80.47 km/h) | 50.48 mph (81.23 km/h) |
| 55 mph (88.51 km/h) | 55.52 mph (89.36 km/h) |
| 60 mph (96.56 km/h) | 60.57 mph (97.48 km/h) |
| 65 mph (104.61 km/h) | 65.62 mph (105.6 km/h) |
| 70 mph (112.65 km/h) | 70.67 mph (113.73 km/h) |
| 75 mph (120.7 km/h) | 75.71 mph (121.85 km/h) |
| 80 mph (128.75 km/h) | 80.76 mph (129.97 km/h) |
| 85 mph (136.79 km/h) | 85.81 mph (138.1 km/h) |
| 90 mph (144.84 km/h) | 90.86 mph (146.22 km/h) |
| 95 mph (152.89 km/h) | 95.91 mph (154.34 km/h) |
| 100 mph (160.93 km/h) | 100.95 mph (162.47 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2050 | 2382 | 2565 | 2679 | 2801 | 2888 | 2984 | 3097 | 3254 | 3411 | 3586 | 3726 | 3979 | 4258 | 4476 | 4616 | 4694 | 4982 | 5383 | 6256 |
Better Fuel Economy Factory Ratios Increased Power
