Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/55-17 | 185/55-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.58 (624.3) | 25.01 (635.3) | 0.43 (11) 1.8% |
| Width inches (mm) | 6.89 (175) | 7.28 (185) | 0.39 (10) 5.7% |
| Circum. inches (mm) | 77.22 (1961.3) | 78.58 (1995.85) | 1.36 (34.56) 1.8% |
| Sidewall Height inches (mm) | 3.79 (96.25) | 4.01 (101.75) | 0.22 (5.5) 5.7% |
| Revolutions per mile (km) | 820.55 (509.87) | 806.34 (501.04) | -14.21 (-8.83) -1.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.35 mph (32.75 km/h) |
| 25 mph (40.23 km/h) | 25.44 mph (40.94 km/h) |
| 30 mph (48.28 km/h) | 30.53 mph (49.13 km/h) |
| 35 mph (56.33 km/h) | 35.62 mph (57.32 km/h) |
| 40 mph (64.37 km/h) | 40.7 mph (65.51 km/h) |
| 45 mph (72.42 km/h) | 45.79 mph (73.7 km/h) |
| 50 mph (80.47 km/h) | 50.88 mph (81.89 km/h) |
| 55 mph (88.51 km/h) | 55.97 mph (90.07 km/h) |
| 60 mph (96.56 km/h) | 61.06 mph (98.26 km/h) |
| 65 mph (104.61 km/h) | 66.15 mph (106.45 km/h) |
| 70 mph (112.65 km/h) | 71.23 mph (114.64 km/h) |
| 75 mph (120.7 km/h) | 76.32 mph (122.83 km/h) |
| 80 mph (128.75 km/h) | 81.41 mph (131.02 km/h) |
| 85 mph (136.79 km/h) | 86.5 mph (139.2 km/h) |
| 90 mph (144.84 km/h) | 91.59 mph (147.39 km/h) |
| 95 mph (152.89 km/h) | 96.67 mph (155.58 km/h) |
| 100 mph (160.93 km/h) | 101.76 mph (163.77 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2052 | 2384 | 2567 | 2681 | 2803 | 2890 | 2986 | 3100 | 3257 | 3414 | 3589 | 3729 | 3982 | 4261 | 4479 | 4619 | 4698 | 4986 | 5388 | 6261 |
Better Fuel Economy Factory Ratios Increased Power
