Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/65-17 | 285/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.61 (828.3) | 32.71 (830.8) | 0.1 (2.5) 0.3% |
| Width inches (mm) | 12.01 (305) | 11.22 (285) | -0.79 (-20) -6.6% |
| Circum. inches (mm) | 102.45 (2602.18) | 102.76 (2610.04) | 0.31 (7.85) 0.3% |
| Sidewall Height inches (mm) | 7.81 (198.25) | 7.85 (199.5) | 0.05 (1.25) 0.6% |
| Revolutions per mile (km) | 618.46 (384.29) | 616.6 (383.14) | -1.86 (-1.16) -0.3% |
285/70-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.06 mph (32.28 km/h) |
| 25 mph (40.23 km/h) | 25.08 mph (40.36 km/h) |
| 30 mph (48.28 km/h) | 30.09 mph (48.43 km/h) |
| 35 mph (56.33 km/h) | 35.11 mph (56.5 km/h) |
| 40 mph (64.37 km/h) | 40.12 mph (64.57 km/h) |
| 45 mph (72.42 km/h) | 45.14 mph (72.64 km/h) |
| 50 mph (80.47 km/h) | 50.15 mph (80.71 km/h) |
| 55 mph (88.51 km/h) | 55.17 mph (88.78 km/h) |
| 60 mph (96.56 km/h) | 60.18 mph (96.85 km/h) |
| 65 mph (104.61 km/h) | 65.2 mph (104.92 km/h) |
| 70 mph (112.65 km/h) | 70.21 mph (112.99 km/h) |
| 75 mph (120.7 km/h) | 75.23 mph (121.07 km/h) |
| 80 mph (128.75 km/h) | 80.24 mph (129.14 km/h) |
| 85 mph (136.79 km/h) | 85.26 mph (137.21 km/h) |
| 90 mph (144.84 km/h) | 90.27 mph (145.28 km/h) |
| 95 mph (152.89 km/h) | 95.29 mph (153.35 km/h) |
| 100 mph (160.93 km/h) | 100.3 mph (161.42 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1569 | 1823 | 1963 | 2050 | 2143 | 2210 | 2284 | 2370 | 2491 | 2611 | 2744 | 2851 | 3045 | 3258 | 3425 | 3532 | 3592 | 3813 | 4120 | 4788 |
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