Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 170/55-17 | 445/35-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.36 (618.8) | 29.26 (743.3) | 4.9 (124.5) 20.1% |
| Width inches (mm) | 6.69 (170) | 17.52 (445) | 10.83 (275) 161.8% |
| Circum. inches (mm) | 76.54 (1944.02) | 91.93 (2335.15) | 15.4 (391.13) 20.1% |
| Sidewall Height inches (mm) | 3.68 (93.5) | 6.13 (155.75) | 2.45 (62.25) 66.6% |
| Revolutions per mile (km) | 827.84 (514.4) | 689.18 (428.24) | -138.66 (-86.16) -16.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.02 mph (38.66 km/h) |
| 25 mph (40.23 km/h) | 30.03 mph (48.33 km/h) |
| 30 mph (48.28 km/h) | 36.04 mph (57.99 km/h) |
| 35 mph (56.33 km/h) | 42.04 mph (67.66 km/h) |
| 40 mph (64.37 km/h) | 48.05 mph (77.33 km/h) |
| 45 mph (72.42 km/h) | 54.05 mph (86.99 km/h) |
| 50 mph (80.47 km/h) | 60.06 mph (96.66 km/h) |
| 55 mph (88.51 km/h) | 66.07 mph (106.32 km/h) |
| 60 mph (96.56 km/h) | 72.07 mph (115.99 km/h) |
| 65 mph (104.61 km/h) | 78.08 mph (125.65 km/h) |
| 70 mph (112.65 km/h) | 84.08 mph (135.32 km/h) |
| 75 mph (120.7 km/h) | 90.09 mph (144.99 km/h) |
| 80 mph (128.75 km/h) | 96.1 mph (154.65 km/h) |
| 85 mph (136.79 km/h) | 102.1 mph (164.32 km/h) |
| 90 mph (144.84 km/h) | 108.11 mph (173.98 km/h) |
| 95 mph (152.89 km/h) | 114.11 mph (183.65 km/h) |
| 100 mph (160.93 km/h) | 120.12 mph (193.31 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1754 | 2037 | 2194 | 2291 | 2396 | 2470 | 2552 | 2649 | 2784 | 2918 | 3067 | 3187 | 3403 | 3642 | 3829 | 3948 | 4015 | 4261 | 4605 | 5351 |
Better Fuel Economy Factory Ratios Increased Power
