Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/55-21 | 275/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.91 (835.9) | 32.99 (838) | 0.08 (2.1) 0.3% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 103.39 (2626.06) | 103.65 (2632.65) | 0.26 (6.6) 0.3% |
| Sidewall Height inches (mm) | 5.95 (151.25) | 6.5 (165) | 0.54 (13.75) 9.1% |
| Revolutions per mile (km) | 612.84 (380.8) | 611.3 (379.84) | -1.54 (-0.95) -0.3% |
275/60-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.05 mph (32.27 km/h) |
| 25 mph (40.23 km/h) | 25.06 mph (40.33 km/h) |
| 30 mph (48.28 km/h) | 30.08 mph (48.4 km/h) |
| 35 mph (56.33 km/h) | 35.09 mph (56.47 km/h) |
| 40 mph (64.37 km/h) | 40.1 mph (64.54 km/h) |
| 45 mph (72.42 km/h) | 45.11 mph (72.6 km/h) |
| 50 mph (80.47 km/h) | 50.13 mph (80.67 km/h) |
| 55 mph (88.51 km/h) | 55.14 mph (88.74 km/h) |
| 60 mph (96.56 km/h) | 60.15 mph (96.8 km/h) |
| 65 mph (104.61 km/h) | 65.16 mph (104.87 km/h) |
| 70 mph (112.65 km/h) | 70.18 mph (112.94 km/h) |
| 75 mph (120.7 km/h) | 75.19 mph (121 km/h) |
| 80 mph (128.75 km/h) | 80.2 mph (129.07 km/h) |
| 85 mph (136.79 km/h) | 85.21 mph (137.14 km/h) |
| 90 mph (144.84 km/h) | 90.23 mph (145.21 km/h) |
| 95 mph (152.89 km/h) | 95.24 mph (153.27 km/h) |
| 100 mph (160.93 km/h) | 100.25 mph (161.34 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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