Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/55-17 | 180/50-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.8 (629.8) | 24.09 (611.8) | -0.71 (-18) -2.9% |
| Width inches (mm) | 7.09 (180) | 7.09 (180) | 0 (0) 0% |
| Circum. inches (mm) | 77.9 (1978.58) | 75.67 (1922.03) | -2.23 (-56.55) -2.9% |
| Sidewall Height inches (mm) | 3.9 (99) | 3.54 (90) | -0.35 (-9) -9.1% |
| Revolutions per mile (km) | 813.39 (505.41) | 837.32 (520.28) | 23.93 (14.87) 2.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.43 mph (31.27 km/h) |
| 25 mph (40.23 km/h) | 24.29 mph (39.08 km/h) |
| 30 mph (48.28 km/h) | 29.14 mph (46.9 km/h) |
| 35 mph (56.33 km/h) | 34 mph (54.72 km/h) |
| 40 mph (64.37 km/h) | 38.86 mph (62.53 km/h) |
| 45 mph (72.42 km/h) | 43.71 mph (70.35 km/h) |
| 50 mph (80.47 km/h) | 48.57 mph (78.17 km/h) |
| 55 mph (88.51 km/h) | 53.43 mph (85.98 km/h) |
| 60 mph (96.56 km/h) | 58.29 mph (93.8 km/h) |
| 65 mph (104.61 km/h) | 63.14 mph (101.62 km/h) |
| 70 mph (112.65 km/h) | 68 mph (109.43 km/h) |
| 75 mph (120.7 km/h) | 72.86 mph (117.25 km/h) |
| 80 mph (128.75 km/h) | 77.71 mph (125.07 km/h) |
| 85 mph (136.79 km/h) | 82.57 mph (132.88 km/h) |
| 90 mph (144.84 km/h) | 87.43 mph (140.7 km/h) |
| 95 mph (152.89 km/h) | 92.28 mph (148.52 km/h) |
| 100 mph (160.93 km/h) | 97.14 mph (156.34 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2131 | 2475 | 2666 | 2784 | 2911 | 3001 | 3101 | 3219 | 3382 | 3545 | 3727 | 3872 | 4135 | 4425 | 4652 | 4797 | 4878 | 5177 | 5595 | 6501 |
Better Fuel Economy Factory Ratios Increased Power
