Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 280/85-16 | 380/85-28 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.74 (882.4) | 53.43 (1357.2) | 18.69 (474.8) 53.8% |
| Width inches (mm) | 11.02 (280) | 14.96 (380) | 3.94 (100) 35.7% |
| Circum. inches (mm) | 109.14 (2772.14) | 167.86 (4263.77) | 58.73 (1491.63) 53.8% |
| Sidewall Height inches (mm) | 9.37 (238) | 12.72 (323) | 3.35 (85) 35.7% |
| Revolutions per mile (km) | 580.54 (360.73) | 377.45 (234.53) | -203.1 (-126.2) -35% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 30.76 mph (49.51 km/h) |
| 25 mph (40.23 km/h) | 38.45 mph (61.88 km/h) |
| 30 mph (48.28 km/h) | 46.14 mph (74.26 km/h) |
| 35 mph (56.33 km/h) | 53.83 mph (86.64 km/h) |
| 40 mph (64.37 km/h) | 61.52 mph (99.01 km/h) |
| 45 mph (72.42 km/h) | 69.21 mph (111.39 km/h) |
| 50 mph (80.47 km/h) | 76.9 mph (123.77 km/h) |
| 55 mph (88.51 km/h) | 84.59 mph (136.14 km/h) |
| 60 mph (96.56 km/h) | 92.28 mph (148.52 km/h) |
| 65 mph (104.61 km/h) | 99.98 mph (160.89 km/h) |
| 70 mph (112.65 km/h) | 107.67 mph (173.27 km/h) |
| 75 mph (120.7 km/h) | 115.36 mph (185.65 km/h) |
| 80 mph (128.75 km/h) | 123.05 mph (198.02 km/h) |
| 85 mph (136.79 km/h) | 130.74 mph (210.4 km/h) |
| 90 mph (144.84 km/h) | 138.43 mph (222.78 km/h) |
| 95 mph (152.89 km/h) | 146.12 mph (235.15 km/h) |
| 100 mph (160.93 km/h) | 153.81 mph (247.53 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
