Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/85-17 | 285/75-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.73 (831.3) | 33.83 (859.3) | 1.1 (28) 3.4% |
| Width inches (mm) | 9.25 (235) | 11.22 (285) | 1.97 (50) 21.3% |
| Circum. inches (mm) | 102.82 (2611.61) | 106.28 (2699.57) | 3.46 (87.96) 3.4% |
| Sidewall Height inches (mm) | 7.86 (199.75) | 8.42 (213.75) | 0.55 (14) 7% |
| Revolutions per mile (km) | 616.23 (382.91) | 596.15 (370.43) | -20.08 (-12.48) -3.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.67 mph (33.27 km/h) |
| 25 mph (40.23 km/h) | 25.84 mph (41.59 km/h) |
| 30 mph (48.28 km/h) | 31.01 mph (49.91 km/h) |
| 35 mph (56.33 km/h) | 36.18 mph (58.22 km/h) |
| 40 mph (64.37 km/h) | 41.35 mph (66.54 km/h) |
| 45 mph (72.42 km/h) | 46.52 mph (74.86 km/h) |
| 50 mph (80.47 km/h) | 51.68 mph (83.18 km/h) |
| 55 mph (88.51 km/h) | 56.85 mph (91.5 km/h) |
| 60 mph (96.56 km/h) | 62.02 mph (99.81 km/h) |
| 65 mph (104.61 km/h) | 67.19 mph (108.13 km/h) |
| 70 mph (112.65 km/h) | 72.36 mph (116.45 km/h) |
| 75 mph (120.7 km/h) | 77.53 mph (124.77 km/h) |
| 80 mph (128.75 km/h) | 82.69 mph (133.08 km/h) |
| 85 mph (136.79 km/h) | 87.86 mph (141.4 km/h) |
| 90 mph (144.84 km/h) | 93.03 mph (149.72 km/h) |
| 95 mph (152.89 km/h) | 98.2 mph (158.04 km/h) |
| 100 mph (160.93 km/h) | 103.37 mph (166.36 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
