Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/50-20 | 285/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.43 (773) | 31.22 (793) | 0.79 (20) 2.6% |
| Width inches (mm) | 10.43 (265) | 11.22 (285) | 0.79 (20) 7.5% |
| Circum. inches (mm) | 95.61 (2428.45) | 98.08 (2491.28) | 2.47 (62.83) 2.6% |
| Sidewall Height inches (mm) | 5.22 (132.5) | 5.61 (142.5) | 0.39 (10) 7.5% |
| Revolutions per mile (km) | 662.7 (411.78) | 645.99 (401.4) | -16.71 (-10.39) -2.5% |
285/50-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.52 mph (33.02 km/h) |
| 25 mph (40.23 km/h) | 25.65 mph (41.27 km/h) |
| 30 mph (48.28 km/h) | 30.78 mph (49.53 km/h) |
| 35 mph (56.33 km/h) | 35.91 mph (57.78 km/h) |
| 40 mph (64.37 km/h) | 41.03 mph (66.04 km/h) |
| 45 mph (72.42 km/h) | 46.16 mph (74.29 km/h) |
| 50 mph (80.47 km/h) | 51.29 mph (82.55 km/h) |
| 55 mph (88.51 km/h) | 56.42 mph (90.8 km/h) |
| 60 mph (96.56 km/h) | 61.55 mph (99.06 km/h) |
| 65 mph (104.61 km/h) | 66.68 mph (107.31 km/h) |
| 70 mph (112.65 km/h) | 71.81 mph (115.57 km/h) |
| 75 mph (120.7 km/h) | 76.94 mph (123.82 km/h) |
| 80 mph (128.75 km/h) | 82.07 mph (132.08 km/h) |
| 85 mph (136.79 km/h) | 87.2 mph (140.33 km/h) |
| 90 mph (144.84 km/h) | 92.33 mph (148.59 km/h) |
| 95 mph (152.89 km/h) | 97.46 mph (156.84 km/h) |
| 100 mph (160.93 km/h) | 102.59 mph (165.1 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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