Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/80-20 | 275/70-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.32 (948) | 35.16 (893) | -2.17 (-55) -5.8% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 117.25 (2978.23) | 110.45 (2805.44) | -6.8 (-172.79) -5.8% |
| Sidewall Height inches (mm) | 8.66 (220) | 7.58 (192.5) | -1.08 (-27.5) -12.5% |
| Revolutions per mile (km) | 540.37 (335.77) | 573.65 (356.45) | 33.28 (20.68) 6.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.84 mph (30.32 km/h) |
| 25 mph (40.23 km/h) | 23.55 mph (37.9 km/h) |
| 30 mph (48.28 km/h) | 28.26 mph (45.48 km/h) |
| 35 mph (56.33 km/h) | 32.97 mph (53.06 km/h) |
| 40 mph (64.37 km/h) | 37.68 mph (60.64 km/h) |
| 45 mph (72.42 km/h) | 42.39 mph (68.22 km/h) |
| 50 mph (80.47 km/h) | 47.1 mph (75.8 km/h) |
| 55 mph (88.51 km/h) | 51.81 mph (83.38 km/h) |
| 60 mph (96.56 km/h) | 56.52 mph (90.96 km/h) |
| 65 mph (104.61 km/h) | 61.23 mph (98.54 km/h) |
| 70 mph (112.65 km/h) | 65.94 mph (106.12 km/h) |
| 75 mph (120.7 km/h) | 70.65 mph (113.7 km/h) |
| 80 mph (128.75 km/h) | 75.36 mph (121.28 km/h) |
| 85 mph (136.79 km/h) | 80.07 mph (128.86 km/h) |
| 90 mph (144.84 km/h) | 84.78 mph (136.44 km/h) |
| 95 mph (152.89 km/h) | 89.49 mph (144.02 km/h) |
| 100 mph (160.93 km/h) | 94.2 mph (151.6 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1460 | 1696 | 1826 | 1907 | 1994 | 2056 | 2125 | 2205 | 2317 | 2429 | 2553 | 2653 | 2833 | 3031 | 3187 | 3286 | 3342 | 3547 | 3833 | 4454 |
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