Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/75-17 | 185/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.33 (694.3) | 27.2 (690.8) | -0.14 (-3.5) -0.5% |
| Width inches (mm) | 6.89 (175) | 7.28 (185) | 0.39 (10) 5.7% |
| Circum. inches (mm) | 85.87 (2181.21) | 85.44 (2170.21) | -0.43 (-11) -0.5% |
| Sidewall Height inches (mm) | 5.17 (131.25) | 5.1 (129.5) | -0.07 (-1.75) -1.3% |
| Revolutions per mile (km) | 737.82 (458.46) | 741.56 (460.78) | 3.74 (2.32) 0.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.9 mph (32.02 km/h) |
| 25 mph (40.23 km/h) | 24.87 mph (40.03 km/h) |
| 30 mph (48.28 km/h) | 29.85 mph (48.04 km/h) |
| 35 mph (56.33 km/h) | 34.82 mph (56.04 km/h) |
| 40 mph (64.37 km/h) | 39.8 mph (64.05 km/h) |
| 45 mph (72.42 km/h) | 44.77 mph (72.06 km/h) |
| 50 mph (80.47 km/h) | 49.75 mph (80.06 km/h) |
| 55 mph (88.51 km/h) | 54.72 mph (88.07 km/h) |
| 60 mph (96.56 km/h) | 59.7 mph (96.07 km/h) |
| 65 mph (104.61 km/h) | 64.67 mph (104.08 km/h) |
| 70 mph (112.65 km/h) | 69.65 mph (112.09 km/h) |
| 75 mph (120.7 km/h) | 74.62 mph (120.09 km/h) |
| 80 mph (128.75 km/h) | 79.6 mph (128.1 km/h) |
| 85 mph (136.79 km/h) | 84.57 mph (136.1 km/h) |
| 90 mph (144.84 km/h) | 89.55 mph (144.11 km/h) |
| 95 mph (152.89 km/h) | 94.52 mph (152.12 km/h) |
| 100 mph (160.93 km/h) | 99.5 mph (160.12 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1887 | 2192 | 2361 | 2465 | 2578 | 2658 | 2746 | 2851 | 2995 | 3140 | 3300 | 3429 | 3662 | 3919 | 4120 | 4248 | 4320 | 4585 | 4955 | 5758 |
Better Fuel Economy Factory Ratios Increased Power
