Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/80-20 | 280/70-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.32 (948) | 35.43 (900) | -1.89 (-48) -5.1% |
| Width inches (mm) | 10.83 (275) | 11.02 (280) | 0.2 (5) 1.8% |
| Circum. inches (mm) | 117.25 (2978.23) | 111.32 (2827.43) | -5.94 (-150.8) -5.1% |
| Sidewall Height inches (mm) | 8.66 (220) | 7.72 (196) | -0.94 (-24) -10.9% |
| Revolutions per mile (km) | 540.37 (335.77) | 569.19 (353.68) | 28.82 (17.91) 5.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.99 mph (30.56 km/h) |
| 25 mph (40.23 km/h) | 23.73 mph (38.2 km/h) |
| 30 mph (48.28 km/h) | 28.48 mph (45.84 km/h) |
| 35 mph (56.33 km/h) | 33.23 mph (53.48 km/h) |
| 40 mph (64.37 km/h) | 37.97 mph (61.11 km/h) |
| 45 mph (72.42 km/h) | 42.72 mph (68.75 km/h) |
| 50 mph (80.47 km/h) | 47.47 mph (76.39 km/h) |
| 55 mph (88.51 km/h) | 52.22 mph (84.03 km/h) |
| 60 mph (96.56 km/h) | 56.96 mph (91.67 km/h) |
| 65 mph (104.61 km/h) | 61.71 mph (99.31 km/h) |
| 70 mph (112.65 km/h) | 66.46 mph (106.95 km/h) |
| 75 mph (120.7 km/h) | 71.2 mph (114.59 km/h) |
| 80 mph (128.75 km/h) | 75.95 mph (122.23 km/h) |
| 85 mph (136.79 km/h) | 80.7 mph (129.87 km/h) |
| 90 mph (144.84 km/h) | 85.44 mph (137.51 km/h) |
| 95 mph (152.89 km/h) | 90.19 mph (145.15 km/h) |
| 100 mph (160.93 km/h) | 94.94 mph (152.79 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1448 | 1683 | 1812 | 1892 | 1979 | 2040 | 2108 | 2188 | 2299 | 2410 | 2533 | 2632 | 2811 | 3008 | 3162 | 3261 | 3316 | 3519 | 3803 | 4419 |
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