Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/55-17 | 165/55-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.8 (629.8) | 24.15 (613.3) | -0.65 (-16.5) -2.6% |
| Width inches (mm) | 7.09 (180) | 6.5 (165) | -0.59 (-15) -8.3% |
| Circum. inches (mm) | 77.9 (1978.58) | 75.86 (1926.74) | -2.04 (-51.84) -2.6% |
| Sidewall Height inches (mm) | 3.9 (99) | 3.57 (90.75) | -0.32 (-8.25) -8.3% |
| Revolutions per mile (km) | 813.39 (505.41) | 835.27 (519.01) | 21.88 (13.6) 2.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.48 mph (31.34 km/h) |
| 25 mph (40.23 km/h) | 24.35 mph (39.18 km/h) |
| 30 mph (48.28 km/h) | 29.21 mph (47.02 km/h) |
| 35 mph (56.33 km/h) | 34.08 mph (54.85 km/h) |
| 40 mph (64.37 km/h) | 38.95 mph (62.69 km/h) |
| 45 mph (72.42 km/h) | 43.82 mph (70.52 km/h) |
| 50 mph (80.47 km/h) | 48.69 mph (78.36 km/h) |
| 55 mph (88.51 km/h) | 53.56 mph (86.2 km/h) |
| 60 mph (96.56 km/h) | 58.43 mph (94.03 km/h) |
| 65 mph (104.61 km/h) | 63.3 mph (101.87 km/h) |
| 70 mph (112.65 km/h) | 68.17 mph (109.7 km/h) |
| 75 mph (120.7 km/h) | 73.04 mph (117.54 km/h) |
| 80 mph (128.75 km/h) | 77.9 mph (125.37 km/h) |
| 85 mph (136.79 km/h) | 82.77 mph (133.21 km/h) |
| 90 mph (144.84 km/h) | 87.64 mph (141.05 km/h) |
| 95 mph (152.89 km/h) | 92.51 mph (148.88 km/h) |
| 100 mph (160.93 km/h) | 97.38 mph (156.72 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2126 | 2469 | 2659 | 2777 | 2903 | 2994 | 3093 | 3211 | 3374 | 3537 | 3718 | 3862 | 4125 | 4414 | 4640 | 4785 | 4866 | 5165 | 5581 | 6485 |
Better Fuel Economy Factory Ratios Increased Power
