Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/70-17 | 285/75-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.81 (858.8) | 33.83 (859.3) | 0.02 (0.5) 0.1% |
| Width inches (mm) | 12.01 (305) | 11.22 (285) | -0.79 (-20) -6.6% |
| Circum. inches (mm) | 106.22 (2698) | 106.28 (2699.57) | 0.06 (1.57) 0.1% |
| Sidewall Height inches (mm) | 8.41 (213.5) | 8.42 (213.75) | 0.01 (0.25) 0.1% |
| Revolutions per mile (km) | 596.5 (370.64) | 596.15 (370.43) | -0.35 (-0.22) -0.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.01 mph (32.21 km/h) |
| 25 mph (40.23 km/h) | 25.01 mph (40.26 km/h) |
| 30 mph (48.28 km/h) | 30.02 mph (48.31 km/h) |
| 35 mph (56.33 km/h) | 35.02 mph (56.36 km/h) |
| 40 mph (64.37 km/h) | 40.02 mph (64.41 km/h) |
| 45 mph (72.42 km/h) | 45.03 mph (72.46 km/h) |
| 50 mph (80.47 km/h) | 50.03 mph (80.51 km/h) |
| 55 mph (88.51 km/h) | 55.03 mph (88.57 km/h) |
| 60 mph (96.56 km/h) | 60.03 mph (96.62 km/h) |
| 65 mph (104.61 km/h) | 65.04 mph (104.67 km/h) |
| 70 mph (112.65 km/h) | 70.04 mph (112.72 km/h) |
| 75 mph (120.7 km/h) | 75.04 mph (120.77 km/h) |
| 80 mph (128.75 km/h) | 80.05 mph (128.82 km/h) |
| 85 mph (136.79 km/h) | 85.05 mph (136.87 km/h) |
| 90 mph (144.84 km/h) | 90.05 mph (144.93 km/h) |
| 95 mph (152.89 km/h) | 95.06 mph (152.98 km/h) |
| 100 mph (160.93 km/h) | 100.06 mph (161.03 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1517 | 1762 | 1898 | 1982 | 2072 | 2137 | 2208 | 2292 | 2408 | 2524 | 2653 | 2757 | 2944 | 3150 | 3312 | 3415 | 3473 | 3686 | 3983 | 4629 |
Better Fuel Economy Factory Ratios Increased Power
