Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/55-19 | 285/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.91 (785.1) | 31.22 (793) | 0.31 (7.9) 1% |
| Width inches (mm) | 10.83 (275) | 11.22 (285) | 0.39 (10) 3.6% |
| Circum. inches (mm) | 97.1 (2466.46) | 98.08 (2491.28) | 0.98 (24.82) 1% |
| Sidewall Height inches (mm) | 5.95 (151.25) | 5.61 (142.5) | -0.34 (-8.75) -5.8% |
| Revolutions per mile (km) | 652.49 (405.44) | 645.99 (401.4) | -6.5 (-4.04) -1% |
285/50-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.2 mph (32.51 km/h) |
| 25 mph (40.23 km/h) | 25.25 mph (40.64 km/h) |
| 30 mph (48.28 km/h) | 30.3 mph (48.77 km/h) |
| 35 mph (56.33 km/h) | 35.35 mph (56.89 km/h) |
| 40 mph (64.37 km/h) | 40.4 mph (65.02 km/h) |
| 45 mph (72.42 km/h) | 45.45 mph (73.15 km/h) |
| 50 mph (80.47 km/h) | 50.5 mph (81.28 km/h) |
| 55 mph (88.51 km/h) | 55.55 mph (89.4 km/h) |
| 60 mph (96.56 km/h) | 60.6 mph (97.53 km/h) |
| 65 mph (104.61 km/h) | 65.65 mph (105.66 km/h) |
| 70 mph (112.65 km/h) | 70.7 mph (113.79 km/h) |
| 75 mph (120.7 km/h) | 75.75 mph (121.92 km/h) |
| 80 mph (128.75 km/h) | 80.8 mph (130.04 km/h) |
| 85 mph (136.79 km/h) | 85.86 mph (138.17 km/h) |
| 90 mph (144.84 km/h) | 90.91 mph (146.3 km/h) |
| 95 mph (152.89 km/h) | 95.96 mph (154.43 km/h) |
| 100 mph (160.93 km/h) | 101.01 mph (162.55 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1644 | 1910 | 2057 | 2148 | 2246 | 2315 | 2392 | 2483 | 2609 | 2735 | 2875 | 2987 | 3190 | 3414 | 3589 | 3701 | 3764 | 3994 | 4316 | 5016 |
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