Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/55-20 | 285/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.91 (810.5) | 33.46 (850) | 1.56 (39.5) 4.9% |
| Width inches (mm) | 10.83 (275) | 11.22 (285) | 0.39 (10) 3.6% |
| Circum. inches (mm) | 100.25 (2546.26) | 105.13 (2670.35) | 4.89 (124.09) 4.9% |
| Sidewall Height inches (mm) | 5.95 (151.25) | 6.73 (171) | 0.78 (19.75) 13.1% |
| Revolutions per mile (km) | 632.04 (392.73) | 602.67 (374.48) | -29.37 (-18.25) -4.6% |
285/60-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.97 mph (33.76 km/h) |
| 25 mph (40.23 km/h) | 26.22 mph (42.19 km/h) |
| 30 mph (48.28 km/h) | 31.46 mph (50.63 km/h) |
| 35 mph (56.33 km/h) | 36.71 mph (59.07 km/h) |
| 40 mph (64.37 km/h) | 41.95 mph (67.51 km/h) |
| 45 mph (72.42 km/h) | 47.19 mph (75.95 km/h) |
| 50 mph (80.47 km/h) | 52.44 mph (84.39 km/h) |
| 55 mph (88.51 km/h) | 57.68 mph (92.83 km/h) |
| 60 mph (96.56 km/h) | 62.92 mph (101.27 km/h) |
| 65 mph (104.61 km/h) | 68.17 mph (109.71 km/h) |
| 70 mph (112.65 km/h) | 73.41 mph (118.14 km/h) |
| 75 mph (120.7 km/h) | 78.66 mph (126.58 km/h) |
| 80 mph (128.75 km/h) | 83.9 mph (135.02 km/h) |
| 85 mph (136.79 km/h) | 89.14 mph (143.46 km/h) |
| 90 mph (144.84 km/h) | 94.39 mph (151.9 km/h) |
| 95 mph (152.89 km/h) | 99.63 mph (160.34 km/h) |
| 100 mph (160.93 km/h) | 104.87 mph (168.78 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1534 | 1782 | 1919 | 2004 | 2095 | 2160 | 2232 | 2317 | 2434 | 2552 | 2682 | 2787 | 2976 | 3185 | 3348 | 3452 | 3511 | 3727 | 4027 | 4679 |
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