Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/75-20 | 275/75-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 36.83 (935.5) | 36.24 (920.5) | -0.59 (-15) -1.6% |
| Width inches (mm) | 11.22 (285) | 10.83 (275) | -0.39 (-10) -3.5% |
| Circum. inches (mm) | 115.71 (2938.96) | 113.85 (2891.84) | -1.86 (-47.12) -1.6% |
| Sidewall Height inches (mm) | 8.42 (213.75) | 8.12 (206.25) | -0.3 (-7.5) -3.5% |
| Revolutions per mile (km) | 547.59 (340.26) | 556.51 (345.8) | 8.92 (5.54) 1.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.68 mph (31.67 km/h) |
| 25 mph (40.23 km/h) | 24.6 mph (39.59 km/h) |
| 30 mph (48.28 km/h) | 29.52 mph (47.51 km/h) |
| 35 mph (56.33 km/h) | 34.44 mph (55.42 km/h) |
| 40 mph (64.37 km/h) | 39.36 mph (63.34 km/h) |
| 45 mph (72.42 km/h) | 44.28 mph (71.26 km/h) |
| 50 mph (80.47 km/h) | 49.2 mph (79.18 km/h) |
| 55 mph (88.51 km/h) | 54.12 mph (87.09 km/h) |
| 60 mph (96.56 km/h) | 59.04 mph (95.01 km/h) |
| 65 mph (104.61 km/h) | 63.96 mph (102.93 km/h) |
| 70 mph (112.65 km/h) | 68.88 mph (110.85 km/h) |
| 75 mph (120.7 km/h) | 73.8 mph (118.77 km/h) |
| 80 mph (128.75 km/h) | 78.72 mph (126.68 km/h) |
| 85 mph (136.79 km/h) | 83.64 mph (134.6 km/h) |
| 90 mph (144.84 km/h) | 88.56 mph (142.52 km/h) |
| 95 mph (152.89 km/h) | 93.48 mph (150.44 km/h) |
| 100 mph (160.93 km/h) | 98.4 mph (158.35 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1416 | 1645 | 1772 | 1850 | 1934 | 1995 | 2061 | 2139 | 2248 | 2356 | 2477 | 2573 | 2748 | 2941 | 3092 | 3188 | 3242 | 3441 | 3718 | 4321 |
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