Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/80-18 | 285/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 35.32 (897.2) | 32.71 (830.8) | -2.61 (-66.4) -7.4% |
| Width inches (mm) | 10.83 (275) | 11.22 (285) | 0.39 (10) 3.6% |
| Circum. inches (mm) | 110.97 (2818.64) | 102.76 (2610.04) | -8.21 (-208.6) -7.4% |
| Sidewall Height inches (mm) | 8.66 (220) | 7.85 (199.5) | -0.81 (-20.5) -9.3% |
| Revolutions per mile (km) | 570.97 (354.78) | 616.6 (383.14) | 45.63 (28.36) 8% |
285/70-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.52 mph (29.8 km/h) |
| 25 mph (40.23 km/h) | 23.15 mph (37.26 km/h) |
| 30 mph (48.28 km/h) | 27.78 mph (44.71 km/h) |
| 35 mph (56.33 km/h) | 32.41 mph (52.16 km/h) |
| 40 mph (64.37 km/h) | 37.04 mph (59.61 km/h) |
| 45 mph (72.42 km/h) | 41.67 mph (67.06 km/h) |
| 50 mph (80.47 km/h) | 46.3 mph (74.51 km/h) |
| 55 mph (88.51 km/h) | 50.93 mph (81.96 km/h) |
| 60 mph (96.56 km/h) | 55.56 mph (89.41 km/h) |
| 65 mph (104.61 km/h) | 60.19 mph (96.87 km/h) |
| 70 mph (112.65 km/h) | 64.82 mph (104.32 km/h) |
| 75 mph (120.7 km/h) | 69.45 mph (111.77 km/h) |
| 80 mph (128.75 km/h) | 74.08 mph (119.22 km/h) |
| 85 mph (136.79 km/h) | 78.71 mph (126.67 km/h) |
| 90 mph (144.84 km/h) | 83.34 mph (134.12 km/h) |
| 95 mph (152.89 km/h) | 87.97 mph (141.57 km/h) |
| 100 mph (160.93 km/h) | 92.6 mph (149.02 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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