Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/65-20 | 285/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.56 (852.5) | 33.46 (850) | -0.1 (-2.5) -0.3% |
| Width inches (mm) | 10.43 (265) | 11.22 (285) | 0.79 (20) 7.5% |
| Circum. inches (mm) | 105.44 (2678.21) | 105.13 (2670.35) | -0.31 (-7.85) -0.3% |
| Sidewall Height inches (mm) | 6.78 (172.25) | 6.73 (171) | -0.05 (-1.25) -0.7% |
| Revolutions per mile (km) | 600.9 (373.38) | 602.67 (374.48) | 1.77 (1.1) 0.3% |
285/60-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.94 mph (32.09 km/h) |
| 25 mph (40.23 km/h) | 24.93 mph (40.12 km/h) |
| 30 mph (48.28 km/h) | 29.91 mph (48.14 km/h) |
| 35 mph (56.33 km/h) | 34.9 mph (56.16 km/h) |
| 40 mph (64.37 km/h) | 39.88 mph (64.19 km/h) |
| 45 mph (72.42 km/h) | 44.87 mph (72.21 km/h) |
| 50 mph (80.47 km/h) | 49.85 mph (80.23 km/h) |
| 55 mph (88.51 km/h) | 54.84 mph (88.25 km/h) |
| 60 mph (96.56 km/h) | 59.82 mph (96.28 km/h) |
| 65 mph (104.61 km/h) | 64.81 mph (104.3 km/h) |
| 70 mph (112.65 km/h) | 69.79 mph (112.32 km/h) |
| 75 mph (120.7 km/h) | 74.78 mph (120.35 km/h) |
| 80 mph (128.75 km/h) | 79.77 mph (128.37 km/h) |
| 85 mph (136.79 km/h) | 84.75 mph (136.39 km/h) |
| 90 mph (144.84 km/h) | 89.74 mph (144.42 km/h) |
| 95 mph (152.89 km/h) | 94.72 mph (152.44 km/h) |
| 100 mph (160.93 km/h) | 99.71 mph (160.46 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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