Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/70-20 | 285/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 35.16 (893) | 33.46 (850) | -1.69 (-43) -4.8% |
| Width inches (mm) | 10.83 (275) | 11.22 (285) | 0.39 (10) 3.6% |
| Circum. inches (mm) | 110.45 (2805.44) | 105.13 (2670.35) | -5.32 (-135.09) -4.8% |
| Sidewall Height inches (mm) | 7.58 (192.5) | 6.73 (171) | -0.85 (-21.5) -11.2% |
| Revolutions per mile (km) | 573.65 (356.45) | 602.67 (374.48) | 29.02 (18.03) 5.1% |
285/60-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.04 mph (30.64 km/h) |
| 25 mph (40.23 km/h) | 23.8 mph (38.3 km/h) |
| 30 mph (48.28 km/h) | 28.56 mph (45.96 km/h) |
| 35 mph (56.33 km/h) | 33.31 mph (53.61 km/h) |
| 40 mph (64.37 km/h) | 38.07 mph (61.27 km/h) |
| 45 mph (72.42 km/h) | 42.83 mph (68.93 km/h) |
| 50 mph (80.47 km/h) | 47.59 mph (76.59 km/h) |
| 55 mph (88.51 km/h) | 52.35 mph (84.25 km/h) |
| 60 mph (96.56 km/h) | 57.11 mph (91.91 km/h) |
| 65 mph (104.61 km/h) | 61.87 mph (99.57 km/h) |
| 70 mph (112.65 km/h) | 66.63 mph (107.23 km/h) |
| 75 mph (120.7 km/h) | 71.39 mph (114.89 km/h) |
| 80 mph (128.75 km/h) | 76.15 mph (122.55 km/h) |
| 85 mph (136.79 km/h) | 80.91 mph (130.21 km/h) |
| 90 mph (144.84 km/h) | 85.67 mph (137.87 km/h) |
| 95 mph (152.89 km/h) | 90.43 mph (145.53 km/h) |
| 100 mph (160.93 km/h) | 95.18 mph (153.19 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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