Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 170/55-17 | 80/50-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.36 (618.8) | 20.15 (511.8) | -4.21 (-107) -17.3% |
| Width inches (mm) | 6.69 (170) | 3.15 (80) | -3.54 (-90) -52.9% |
| Circum. inches (mm) | 76.54 (1944.02) | 63.3 (1607.87) | -13.23 (-336.15) -17.3% |
| Sidewall Height inches (mm) | 3.68 (93.5) | 1.57 (40) | -2.11 (-53.5) -57.2% |
| Revolutions per mile (km) | 827.84 (514.4) | 1000.92 (621.94) | 173.07 (107.54) 20.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 16.54 mph (26.62 km/h) |
| 25 mph (40.23 km/h) | 20.68 mph (33.28 km/h) |
| 30 mph (48.28 km/h) | 24.81 mph (39.93 km/h) |
| 35 mph (56.33 km/h) | 28.95 mph (46.59 km/h) |
| 40 mph (64.37 km/h) | 33.08 mph (53.24 km/h) |
| 45 mph (72.42 km/h) | 37.22 mph (59.9 km/h) |
| 50 mph (80.47 km/h) | 41.35 mph (66.55 km/h) |
| 55 mph (88.51 km/h) | 45.49 mph (73.21 km/h) |
| 60 mph (96.56 km/h) | 49.63 mph (79.86 km/h) |
| 65 mph (104.61 km/h) | 53.76 mph (86.52 km/h) |
| 70 mph (112.65 km/h) | 57.9 mph (93.17 km/h) |
| 75 mph (120.7 km/h) | 62.03 mph (99.83 km/h) |
| 80 mph (128.75 km/h) | 66.17 mph (106.49 km/h) |
| 85 mph (136.79 km/h) | 70.3 mph (113.14 km/h) |
| 90 mph (144.84 km/h) | 74.44 mph (119.8 km/h) |
| 95 mph (152.89 km/h) | 78.57 mph (126.45 km/h) |
| 100 mph (160.93 km/h) | 82.71 mph (133.11 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
