Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/80-20 | 285/70-19.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.32 (948) | 35.21 (894.3) | -2.11 (-53.7) -5.7% |
| Width inches (mm) | 10.83 (275) | 11.22 (285) | 0.39 (10) 3.6% |
| Circum. inches (mm) | 117.25 (2978.23) | 110.61 (2809.53) | -6.64 (-168.7) -5.7% |
| Sidewall Height inches (mm) | 8.66 (220) | 7.85 (199.5) | -0.81 (-20.5) -9.3% |
| Revolutions per mile (km) | 540.37 (335.77) | 572.82 (355.93) | 32.45 (20.16) 6% |
285/70-19.5 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.87 mph (30.36 km/h) |
| 25 mph (40.23 km/h) | 23.58 mph (37.95 km/h) |
| 30 mph (48.28 km/h) | 28.3 mph (45.55 km/h) |
| 35 mph (56.33 km/h) | 33.02 mph (53.14 km/h) |
| 40 mph (64.37 km/h) | 37.73 mph (60.73 km/h) |
| 45 mph (72.42 km/h) | 42.45 mph (68.32 km/h) |
| 50 mph (80.47 km/h) | 47.17 mph (75.91 km/h) |
| 55 mph (88.51 km/h) | 51.88 mph (83.5 km/h) |
| 60 mph (96.56 km/h) | 56.6 mph (91.09 km/h) |
| 65 mph (104.61 km/h) | 61.32 mph (98.68 km/h) |
| 70 mph (112.65 km/h) | 66.03 mph (106.27 km/h) |
| 75 mph (120.7 km/h) | 70.75 mph (113.86 km/h) |
| 80 mph (128.75 km/h) | 75.47 mph (121.45 km/h) |
| 85 mph (136.79 km/h) | 80.19 mph (129.05 km/h) |
| 90 mph (144.84 km/h) | 84.9 mph (136.64 km/h) |
| 95 mph (152.89 km/h) | 89.62 mph (144.23 km/h) |
| 100 mph (160.93 km/h) | 94.34 mph (151.82 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1458 | 1693 | 1824 | 1904 | 1991 | 2053 | 2121 | 2202 | 2314 | 2425 | 2549 | 2649 | 2829 | 3027 | 3182 | 3281 | 3337 | 3542 | 3827 | 4448 |
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