Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/80-20 | 275/75-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.32 (948) | 36.24 (920.5) | -1.08 (-27.5) -2.9% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 117.25 (2978.23) | 113.85 (2891.84) | -3.4 (-86.39) -2.9% |
| Sidewall Height inches (mm) | 8.66 (220) | 8.12 (206.25) | -0.54 (-13.75) -6.3% |
| Revolutions per mile (km) | 540.37 (335.77) | 556.51 (345.8) | 16.14 (10.03) 3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.42 mph (31.25 km/h) |
| 25 mph (40.23 km/h) | 24.27 mph (39.07 km/h) |
| 30 mph (48.28 km/h) | 29.13 mph (46.88 km/h) |
| 35 mph (56.33 km/h) | 33.98 mph (54.69 km/h) |
| 40 mph (64.37 km/h) | 38.84 mph (62.51 km/h) |
| 45 mph (72.42 km/h) | 43.69 mph (70.32 km/h) |
| 50 mph (80.47 km/h) | 48.55 mph (78.13 km/h) |
| 55 mph (88.51 km/h) | 53.4 mph (85.95 km/h) |
| 60 mph (96.56 km/h) | 58.26 mph (93.76 km/h) |
| 65 mph (104.61 km/h) | 63.11 mph (101.57 km/h) |
| 70 mph (112.65 km/h) | 67.97 mph (109.39 km/h) |
| 75 mph (120.7 km/h) | 72.82 mph (117.2 km/h) |
| 80 mph (128.75 km/h) | 77.68 mph (125.01 km/h) |
| 85 mph (136.79 km/h) | 82.53 mph (132.83 km/h) |
| 90 mph (144.84 km/h) | 87.39 mph (140.64 km/h) |
| 95 mph (152.89 km/h) | 92.24 mph (148.45 km/h) |
| 100 mph (160.93 km/h) | 97.1 mph (156.27 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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