Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/45-20 | 275/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.1 (764.5) | 32.99 (838) | 2.89 (73.5) 9.6% |
| Width inches (mm) | 11.22 (285) | 10.83 (275) | -0.39 (-10) -3.5% |
| Circum. inches (mm) | 94.56 (2401.75) | 103.65 (2632.65) | 9.09 (230.91) 9.6% |
| Sidewall Height inches (mm) | 5.05 (128.25) | 6.5 (165) | 1.45 (36.75) 28.7% |
| Revolutions per mile (km) | 670.07 (416.36) | 611.3 (379.84) | -58.77 (-36.52) -8.8% |
275/60-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.92 mph (35.28 km/h) |
| 25 mph (40.23 km/h) | 27.4 mph (44.1 km/h) |
| 30 mph (48.28 km/h) | 32.88 mph (52.92 km/h) |
| 35 mph (56.33 km/h) | 38.36 mph (61.74 km/h) |
| 40 mph (64.37 km/h) | 43.85 mph (70.56 km/h) |
| 45 mph (72.42 km/h) | 49.33 mph (79.38 km/h) |
| 50 mph (80.47 km/h) | 54.81 mph (88.2 km/h) |
| 55 mph (88.51 km/h) | 60.29 mph (97.02 km/h) |
| 60 mph (96.56 km/h) | 65.77 mph (105.84 km/h) |
| 65 mph (104.61 km/h) | 71.25 mph (114.66 km/h) |
| 70 mph (112.65 km/h) | 76.73 mph (123.49 km/h) |
| 75 mph (120.7 km/h) | 82.21 mph (132.31 km/h) |
| 80 mph (128.75 km/h) | 87.69 mph (141.13 km/h) |
| 85 mph (136.79 km/h) | 93.17 mph (149.95 km/h) |
| 90 mph (144.84 km/h) | 98.65 mph (158.77 km/h) |
| 95 mph (152.89 km/h) | 104.13 mph (167.59 km/h) |
| 100 mph (160.93 km/h) | 109.61 mph (176.41 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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