Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/60-20 | 285/55-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.52 (826) | 32.34 (821.5) | -0.18 (-4.5) -0.5% |
| Width inches (mm) | 10.43 (265) | 11.22 (285) | 0.79 (20) 7.5% |
| Circum. inches (mm) | 102.16 (2594.96) | 101.61 (2580.82) | -0.56 (-14.14) -0.5% |
| Sidewall Height inches (mm) | 6.26 (159) | 6.17 (156.75) | -0.09 (-2.25) -1.4% |
| Revolutions per mile (km) | 620.18 (385.36) | 623.58 (387.47) | 3.4 (2.11) 0.5% |
285/55-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.89 mph (32.01 km/h) |
| 25 mph (40.23 km/h) | 24.86 mph (40.01 km/h) |
| 30 mph (48.28 km/h) | 29.84 mph (48.02 km/h) |
| 35 mph (56.33 km/h) | 34.81 mph (56.02 km/h) |
| 40 mph (64.37 km/h) | 39.78 mph (64.02 km/h) |
| 45 mph (72.42 km/h) | 44.75 mph (72.03 km/h) |
| 50 mph (80.47 km/h) | 49.73 mph (80.03 km/h) |
| 55 mph (88.51 km/h) | 54.7 mph (88.03 km/h) |
| 60 mph (96.56 km/h) | 59.67 mph (96.03 km/h) |
| 65 mph (104.61 km/h) | 64.65 mph (104.04 km/h) |
| 70 mph (112.65 km/h) | 69.62 mph (112.04 km/h) |
| 75 mph (120.7 km/h) | 74.59 mph (120.04 km/h) |
| 80 mph (128.75 km/h) | 79.56 mph (128.05 km/h) |
| 85 mph (136.79 km/h) | 84.54 mph (136.05 km/h) |
| 90 mph (144.84 km/h) | 89.51 mph (144.05 km/h) |
| 95 mph (152.89 km/h) | 94.48 mph (152.06 km/h) |
| 100 mph (160.93 km/h) | 99.46 mph (160.06 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1587 | 1843 | 1985 | 2073 | 2168 | 2235 | 2309 | 2397 | 2519 | 2640 | 2775 | 2883 | 3079 | 3295 | 3464 | 3572 | 3633 | 3856 | 4166 | 4842 |
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