Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/70-17 | 285/65-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.71 (830.8) | 31.59 (802.3) | -1.12 (-28.5) -3.4% |
| Width inches (mm) | 11.22 (285) | 11.22 (285) | 0 (0) 0% |
| Circum. inches (mm) | 102.76 (2610.04) | 99.23 (2520.5) | -3.53 (-89.54) -3.4% |
| Sidewall Height inches (mm) | 7.85 (199.5) | 7.29 (185.25) | -0.56 (-14.25) -7.1% |
| Revolutions per mile (km) | 616.6 (383.14) | 638.5 (396.75) | 21.9 (13.61) 3.6% |
285/65-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.31 mph (31.08 km/h) |
| 25 mph (40.23 km/h) | 24.14 mph (38.85 km/h) |
| 30 mph (48.28 km/h) | 28.97 mph (46.62 km/h) |
| 35 mph (56.33 km/h) | 33.8 mph (54.39 km/h) |
| 40 mph (64.37 km/h) | 38.63 mph (62.17 km/h) |
| 45 mph (72.42 km/h) | 43.46 mph (69.94 km/h) |
| 50 mph (80.47 km/h) | 48.28 mph (77.71 km/h) |
| 55 mph (88.51 km/h) | 53.11 mph (85.48 km/h) |
| 60 mph (96.56 km/h) | 57.94 mph (93.25 km/h) |
| 65 mph (104.61 km/h) | 62.77 mph (101.02 km/h) |
| 70 mph (112.65 km/h) | 67.6 mph (108.79 km/h) |
| 75 mph (120.7 km/h) | 72.43 mph (116.56 km/h) |
| 80 mph (128.75 km/h) | 77.26 mph (124.33 km/h) |
| 85 mph (136.79 km/h) | 82.08 mph (132.1 km/h) |
| 90 mph (144.84 km/h) | 86.91 mph (139.87 km/h) |
| 95 mph (152.89 km/h) | 91.74 mph (147.64 km/h) |
| 100 mph (160.93 km/h) | 96.57 mph (155.41 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1625 | 1888 | 2033 | 2123 | 2219 | 2289 | 2365 | 2455 | 2579 | 2703 | 2842 | 2952 | 3153 | 3374 | 3547 | 3658 | 3720 | 3948 | 4266 | 4958 |
Better Fuel Economy Factory Ratios Increased Power
