Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/80-16 | 325/80-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.06 (814.4) | 36.47 (926.4) | 4.41 (112) 13.8% |
| Width inches (mm) | 10.04 (255) | 12.8 (325) | 2.76 (70) 27.5% |
| Circum. inches (mm) | 100.73 (2558.51) | 114.58 (2910.37) | 13.85 (351.86) 13.8% |
| Sidewall Height inches (mm) | 8.03 (204) | 10.24 (260) | 2.2 (56) 27.5% |
| Revolutions per mile (km) | 629.02 (390.85) | 552.97 (343.6) | -76.05 (-47.25) -12.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.75 mph (36.61 km/h) |
| 25 mph (40.23 km/h) | 28.44 mph (45.77 km/h) |
| 30 mph (48.28 km/h) | 34.13 mph (54.92 km/h) |
| 35 mph (56.33 km/h) | 39.81 mph (64.07 km/h) |
| 40 mph (64.37 km/h) | 45.5 mph (73.23 km/h) |
| 45 mph (72.42 km/h) | 51.19 mph (82.38 km/h) |
| 50 mph (80.47 km/h) | 56.88 mph (91.53 km/h) |
| 55 mph (88.51 km/h) | 62.56 mph (100.69 km/h) |
| 60 mph (96.56 km/h) | 68.25 mph (109.84 km/h) |
| 65 mph (104.61 km/h) | 73.94 mph (118.99 km/h) |
| 70 mph (112.65 km/h) | 79.63 mph (128.15 km/h) |
| 75 mph (120.7 km/h) | 85.31 mph (137.3 km/h) |
| 80 mph (128.75 km/h) | 91 mph (146.45 km/h) |
| 85 mph (136.79 km/h) | 96.69 mph (155.61 km/h) |
| 90 mph (144.84 km/h) | 102.38 mph (164.76 km/h) |
| 95 mph (152.89 km/h) | 108.06 mph (173.91 km/h) |
| 100 mph (160.93 km/h) | 113.75 mph (183.07 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1407 | 1635 | 1760 | 1838 | 1922 | 1982 | 2048 | 2126 | 2234 | 2341 | 2461 | 2557 | 2731 | 2922 | 3072 | 3168 | 3222 | 3419 | 3695 | 4293 |
Better Fuel Economy Factory Ratios Increased Power
