Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/50-21 | 275/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.83 (808.4) | 32.99 (838) | 1.17 (29.6) 3.7% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 99.99 (2539.66) | 103.65 (2632.65) | 3.66 (92.99) 3.7% |
| Sidewall Height inches (mm) | 5.41 (137.5) | 6.5 (165) | 1.08 (27.5) 20% |
| Revolutions per mile (km) | 633.68 (393.75) | 611.3 (379.84) | -22.38 (-13.91) -3.5% |
275/60-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.73 mph (33.37 km/h) |
| 25 mph (40.23 km/h) | 25.92 mph (41.71 km/h) |
| 30 mph (48.28 km/h) | 31.1 mph (50.05 km/h) |
| 35 mph (56.33 km/h) | 36.28 mph (58.39 km/h) |
| 40 mph (64.37 km/h) | 41.46 mph (66.73 km/h) |
| 45 mph (72.42 km/h) | 46.65 mph (75.07 km/h) |
| 50 mph (80.47 km/h) | 51.83 mph (83.41 km/h) |
| 55 mph (88.51 km/h) | 57.01 mph (91.76 km/h) |
| 60 mph (96.56 km/h) | 62.2 mph (100.1 km/h) |
| 65 mph (104.61 km/h) | 67.38 mph (108.44 km/h) |
| 70 mph (112.65 km/h) | 72.56 mph (116.78 km/h) |
| 75 mph (120.7 km/h) | 77.75 mph (125.12 km/h) |
| 80 mph (128.75 km/h) | 82.93 mph (133.46 km/h) |
| 85 mph (136.79 km/h) | 88.11 mph (141.8 km/h) |
| 90 mph (144.84 km/h) | 93.3 mph (150.14 km/h) |
| 95 mph (152.89 km/h) | 98.48 mph (158.49 km/h) |
| 100 mph (160.93 km/h) | 103.66 mph (166.83 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1556 | 1807 | 1946 | 2032 | 2125 | 2191 | 2264 | 2350 | 2469 | 2588 | 2721 | 2827 | 3019 | 3230 | 3396 | 3502 | 3561 | 3780 | 4084 | 4746 |
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