Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/82-15 | 280/55-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.65 (651.6) | 32.13 (816) | 6.47 (164.4) 25.2% |
| Width inches (mm) | 6.5 (165) | 11.02 (280) | 4.53 (115) 69.7% |
| Circum. inches (mm) | 80.59 (2047.06) | 100.93 (2563.54) | 20.33 (516.48) 25.2% |
| Sidewall Height inches (mm) | 5.33 (135.3) | 6.06 (154) | 0.74 (18.7) 13.8% |
| Revolutions per mile (km) | 786.17 (488.5) | 627.78 (390.08) | -158.39 (-98.42) -20.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.05 mph (40.31 km/h) |
| 25 mph (40.23 km/h) | 31.31 mph (50.38 km/h) |
| 30 mph (48.28 km/h) | 37.57 mph (60.46 km/h) |
| 35 mph (56.33 km/h) | 43.83 mph (70.54 km/h) |
| 40 mph (64.37 km/h) | 50.09 mph (80.62 km/h) |
| 45 mph (72.42 km/h) | 56.35 mph (90.69 km/h) |
| 50 mph (80.47 km/h) | 62.62 mph (100.77 km/h) |
| 55 mph (88.51 km/h) | 68.88 mph (110.85 km/h) |
| 60 mph (96.56 km/h) | 75.14 mph (120.92 km/h) |
| 65 mph (104.61 km/h) | 81.4 mph (131 km/h) |
| 70 mph (112.65 km/h) | 87.66 mph (141.08 km/h) |
| 75 mph (120.7 km/h) | 93.92 mph (151.15 km/h) |
| 80 mph (128.75 km/h) | 100.18 mph (161.23 km/h) |
| 85 mph (136.79 km/h) | 106.45 mph (171.31 km/h) |
| 90 mph (144.84 km/h) | 112.71 mph (181.38 km/h) |
| 95 mph (152.89 km/h) | 118.97 mph (191.46 km/h) |
| 100 mph (160.93 km/h) | 125.23 mph (201.54 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1598 | 1856 | 1999 | 2087 | 2182 | 2250 | 2325 | 2413 | 2536 | 2658 | 2794 | 2903 | 3100 | 3318 | 3487 | 3596 | 3657 | 3882 | 4195 | 4874 |
Better Fuel Economy Factory Ratios Increased Power
