Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/25-20 | 275/55-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.41 (645.5) | 31.91 (810.5) | 6.5 (165) 25.6% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 79.84 (2027.9) | 100.25 (2546.26) | 20.41 (518.36) 25.6% |
| Sidewall Height inches (mm) | 2.71 (68.75) | 5.95 (151.25) | 3.25 (82.5) 120% |
| Revolutions per mile (km) | 793.6 (493.12) | 632.04 (392.73) | -161.56 (-100.39) -20.4% |
275/55-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.11 mph (40.41 km/h) |
| 25 mph (40.23 km/h) | 31.39 mph (50.52 km/h) |
| 30 mph (48.28 km/h) | 37.67 mph (60.62 km/h) |
| 35 mph (56.33 km/h) | 43.95 mph (70.73 km/h) |
| 40 mph (64.37 km/h) | 50.22 mph (80.83 km/h) |
| 45 mph (72.42 km/h) | 56.5 mph (90.93 km/h) |
| 50 mph (80.47 km/h) | 62.78 mph (101.04 km/h) |
| 55 mph (88.51 km/h) | 69.06 mph (111.14 km/h) |
| 60 mph (96.56 km/h) | 75.34 mph (121.24 km/h) |
| 65 mph (104.61 km/h) | 81.62 mph (131.35 km/h) |
| 70 mph (112.65 km/h) | 87.89 mph (141.45 km/h) |
| 75 mph (120.7 km/h) | 94.17 mph (151.55 km/h) |
| 80 mph (128.75 km/h) | 100.45 mph (161.66 km/h) |
| 85 mph (136.79 km/h) | 106.73 mph (171.76 km/h) |
| 90 mph (144.84 km/h) | 113.01 mph (181.86 km/h) |
| 95 mph (152.89 km/h) | 119.28 mph (191.97 km/h) |
| 100 mph (160.93 km/h) | 125.56 mph (202.07 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1608 | 1869 | 2012 | 2101 | 2197 | 2265 | 2341 | 2430 | 2553 | 2676 | 2813 | 2923 | 3121 | 3340 | 3511 | 3621 | 3682 | 3908 | 4223 | 4907 |
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