Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/65-20 | 275/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.59 (878.5) | 32.99 (838) | -1.59 (-40.5) -4.6% |
| Width inches (mm) | 11.22 (285) | 10.83 (275) | -0.39 (-10) -3.5% |
| Circum. inches (mm) | 108.66 (2759.89) | 103.65 (2632.65) | -5.01 (-127.23) -4.6% |
| Sidewall Height inches (mm) | 7.29 (185.25) | 6.5 (165) | -0.8 (-20.25) -10.9% |
| Revolutions per mile (km) | 583.12 (362.33) | 611.3 (379.84) | 28.18 (17.51) 4.8% |
275/60-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.08 mph (30.7 km/h) |
| 25 mph (40.23 km/h) | 23.85 mph (38.38 km/h) |
| 30 mph (48.28 km/h) | 28.62 mph (46.05 km/h) |
| 35 mph (56.33 km/h) | 33.39 mph (53.73 km/h) |
| 40 mph (64.37 km/h) | 38.16 mph (61.41 km/h) |
| 45 mph (72.42 km/h) | 42.93 mph (69.08 km/h) |
| 50 mph (80.47 km/h) | 47.69 mph (76.76 km/h) |
| 55 mph (88.51 km/h) | 52.46 mph (84.43 km/h) |
| 60 mph (96.56 km/h) | 57.23 mph (92.11 km/h) |
| 65 mph (104.61 km/h) | 62 mph (99.79 km/h) |
| 70 mph (112.65 km/h) | 66.77 mph (107.46 km/h) |
| 75 mph (120.7 km/h) | 71.54 mph (115.14 km/h) |
| 80 mph (128.75 km/h) | 76.31 mph (122.81 km/h) |
| 85 mph (136.79 km/h) | 81.08 mph (130.49 km/h) |
| 90 mph (144.84 km/h) | 85.85 mph (138.16 km/h) |
| 95 mph (152.89 km/h) | 90.62 mph (145.84 km/h) |
| 100 mph (160.93 km/h) | 95.39 mph (153.52 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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