Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/65-20 | 275/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.05 (839.5) | 32.99 (838) | -0.06 (-1.5) -0.2% |
| Width inches (mm) | 10.04 (255) | 10.83 (275) | 0.79 (20) 7.8% |
| Circum. inches (mm) | 103.83 (2637.37) | 103.65 (2632.65) | -0.19 (-4.71) -0.2% |
| Sidewall Height inches (mm) | 6.53 (165.75) | 6.5 (165) | -0.03 (-0.75) -0.5% |
| Revolutions per mile (km) | 610.21 (379.17) | 611.3 (379.84) | 1.09 (0.68) 0.2% |
275/60-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.96 mph (32.13 km/h) |
| 25 mph (40.23 km/h) | 24.96 mph (40.16 km/h) |
| 30 mph (48.28 km/h) | 29.95 mph (48.19 km/h) |
| 35 mph (56.33 km/h) | 34.94 mph (56.23 km/h) |
| 40 mph (64.37 km/h) | 39.93 mph (64.26 km/h) |
| 45 mph (72.42 km/h) | 44.92 mph (72.29 km/h) |
| 50 mph (80.47 km/h) | 49.91 mph (80.32 km/h) |
| 55 mph (88.51 km/h) | 54.9 mph (88.36 km/h) |
| 60 mph (96.56 km/h) | 59.89 mph (96.39 km/h) |
| 65 mph (104.61 km/h) | 64.88 mph (104.42 km/h) |
| 70 mph (112.65 km/h) | 69.87 mph (112.45 km/h) |
| 75 mph (120.7 km/h) | 74.87 mph (120.49 km/h) |
| 80 mph (128.75 km/h) | 79.86 mph (128.52 km/h) |
| 85 mph (136.79 km/h) | 84.85 mph (136.55 km/h) |
| 90 mph (144.84 km/h) | 89.84 mph (144.58 km/h) |
| 95 mph (152.89 km/h) | 94.83 mph (152.61 km/h) |
| 100 mph (160.93 km/h) | 99.82 mph (160.65 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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