Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/85-17 | 285/75-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.07 (865.3) | 33.83 (859.3) | -0.24 (-6) -0.7% |
| Width inches (mm) | 10.04 (255) | 11.22 (285) | 1.18 (30) 11.8% |
| Circum. inches (mm) | 107.02 (2718.42) | 106.28 (2699.57) | -0.74 (-18.85) -0.7% |
| Sidewall Height inches (mm) | 8.53 (216.75) | 8.42 (213.75) | -0.12 (-3) -1.4% |
| Revolutions per mile (km) | 592.01 (367.86) | 596.15 (370.43) | 4.13 (2.57) 0.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.86 mph (31.96 km/h) |
| 25 mph (40.23 km/h) | 24.83 mph (39.95 km/h) |
| 30 mph (48.28 km/h) | 29.79 mph (47.95 km/h) |
| 35 mph (56.33 km/h) | 34.76 mph (55.94 km/h) |
| 40 mph (64.37 km/h) | 39.72 mph (63.93 km/h) |
| 45 mph (72.42 km/h) | 44.69 mph (71.92 km/h) |
| 50 mph (80.47 km/h) | 49.65 mph (79.91 km/h) |
| 55 mph (88.51 km/h) | 54.62 mph (87.9 km/h) |
| 60 mph (96.56 km/h) | 59.58 mph (95.89 km/h) |
| 65 mph (104.61 km/h) | 64.55 mph (103.88 km/h) |
| 70 mph (112.65 km/h) | 69.51 mph (111.87 km/h) |
| 75 mph (120.7 km/h) | 74.48 mph (119.86 km/h) |
| 80 mph (128.75 km/h) | 79.45 mph (127.86 km/h) |
| 85 mph (136.79 km/h) | 84.41 mph (135.85 km/h) |
| 90 mph (144.84 km/h) | 89.38 mph (143.84 km/h) |
| 95 mph (152.89 km/h) | 94.34 mph (151.83 km/h) |
| 100 mph (160.93 km/h) | 99.31 mph (159.82 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
