Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/75-20 | 285/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 36.83 (935.5) | 33.46 (850) | -3.37 (-85.5) -9.1% |
| Width inches (mm) | 11.22 (285) | 11.22 (285) | 0 (0) 0% |
| Circum. inches (mm) | 115.71 (2938.96) | 105.13 (2670.35) | -10.58 (-268.61) -9.1% |
| Sidewall Height inches (mm) | 8.42 (213.75) | 6.73 (171) | -1.68 (-42.75) -20% |
| Revolutions per mile (km) | 547.59 (340.26) | 602.67 (374.48) | 55.08 (34.23) 10.1% |
285/60-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.17 mph (29.25 km/h) |
| 25 mph (40.23 km/h) | 22.72 mph (36.56 km/h) |
| 30 mph (48.28 km/h) | 27.26 mph (43.87 km/h) |
| 35 mph (56.33 km/h) | 31.8 mph (51.18 km/h) |
| 40 mph (64.37 km/h) | 36.34 mph (58.49 km/h) |
| 45 mph (72.42 km/h) | 40.89 mph (65.8 km/h) |
| 50 mph (80.47 km/h) | 45.43 mph (73.11 km/h) |
| 55 mph (88.51 km/h) | 49.97 mph (80.42 km/h) |
| 60 mph (96.56 km/h) | 54.52 mph (87.74 km/h) |
| 65 mph (104.61 km/h) | 59.06 mph (95.05 km/h) |
| 70 mph (112.65 km/h) | 63.6 mph (102.36 km/h) |
| 75 mph (120.7 km/h) | 68.15 mph (109.67 km/h) |
| 80 mph (128.75 km/h) | 72.69 mph (116.98 km/h) |
| 85 mph (136.79 km/h) | 77.23 mph (124.29 km/h) |
| 90 mph (144.84 km/h) | 81.77 mph (131.6 km/h) |
| 95 mph (152.89 km/h) | 86.32 mph (138.91 km/h) |
| 100 mph (160.93 km/h) | 90.86 mph (146.23 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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