Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/55-20 | 285/55-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.48 (799.5) | 32.34 (821.5) | 0.87 (22) 2.8% |
| Width inches (mm) | 10.43 (265) | 11.22 (285) | 0.79 (20) 7.5% |
| Circum. inches (mm) | 98.89 (2511.7) | 101.61 (2580.82) | 2.72 (69.12) 2.8% |
| Sidewall Height inches (mm) | 5.74 (145.75) | 6.17 (156.75) | 0.43 (11) 7.5% |
| Revolutions per mile (km) | 640.74 (398.14) | 623.58 (387.47) | -17.16 (-10.66) -2.7% |
285/55-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.55 mph (33.07 km/h) |
| 25 mph (40.23 km/h) | 25.69 mph (41.34 km/h) |
| 30 mph (48.28 km/h) | 30.83 mph (49.61 km/h) |
| 35 mph (56.33 km/h) | 35.96 mph (57.88 km/h) |
| 40 mph (64.37 km/h) | 41.1 mph (66.15 km/h) |
| 45 mph (72.42 km/h) | 46.24 mph (74.41 km/h) |
| 50 mph (80.47 km/h) | 51.38 mph (82.68 km/h) |
| 55 mph (88.51 km/h) | 56.51 mph (90.95 km/h) |
| 60 mph (96.56 km/h) | 61.65 mph (99.22 km/h) |
| 65 mph (104.61 km/h) | 66.79 mph (107.49 km/h) |
| 70 mph (112.65 km/h) | 71.93 mph (115.75 km/h) |
| 75 mph (120.7 km/h) | 77.06 mph (124.02 km/h) |
| 80 mph (128.75 km/h) | 82.2 mph (132.29 km/h) |
| 85 mph (136.79 km/h) | 87.34 mph (140.56 km/h) |
| 90 mph (144.84 km/h) | 92.48 mph (148.83 km/h) |
| 95 mph (152.89 km/h) | 97.61 mph (157.1 km/h) |
| 100 mph (160.93 km/h) | 102.75 mph (165.36 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 |
Better Fuel Economy Factory Ratios Increased Power
