Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/80-15 | 325/75-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 35.47 (901) | 35.19 (893.9) | -0.28 (-7.1) -0.8% |
| Width inches (mm) | 12.8 (325) | 12.8 (325) | 0 (0) 0% |
| Circum. inches (mm) | 111.44 (2830.57) | 110.56 (2808.27) | -0.88 (-22.31) -0.8% |
| Sidewall Height inches (mm) | 10.24 (260) | 9.6 (243.75) | -0.64 (-16.25) -6.3% |
| Revolutions per mile (km) | 568.56 (353.28) | 573.07 (356.09) | 4.52 (2.81) 0.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.84 mph (31.93 km/h) |
| 25 mph (40.23 km/h) | 24.8 mph (39.92 km/h) |
| 30 mph (48.28 km/h) | 29.76 mph (47.9 km/h) |
| 35 mph (56.33 km/h) | 34.72 mph (55.88 km/h) |
| 40 mph (64.37 km/h) | 39.68 mph (63.87 km/h) |
| 45 mph (72.42 km/h) | 44.65 mph (71.85 km/h) |
| 50 mph (80.47 km/h) | 49.61 mph (79.83 km/h) |
| 55 mph (88.51 km/h) | 54.57 mph (87.82 km/h) |
| 60 mph (96.56 km/h) | 59.53 mph (95.8 km/h) |
| 65 mph (104.61 km/h) | 64.49 mph (103.78 km/h) |
| 70 mph (112.65 km/h) | 69.45 mph (111.77 km/h) |
| 75 mph (120.7 km/h) | 74.41 mph (119.75 km/h) |
| 80 mph (128.75 km/h) | 79.37 mph (127.73 km/h) |
| 85 mph (136.79 km/h) | 84.33 mph (135.72 km/h) |
| 90 mph (144.84 km/h) | 89.29 mph (143.7 km/h) |
| 95 mph (152.89 km/h) | 94.25 mph (151.68 km/h) |
| 100 mph (160.93 km/h) | 99.21 mph (159.67 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1458 | 1694 | 1825 | 1905 | 1992 | 2054 | 2122 | 2203 | 2315 | 2426 | 2551 | 2650 | 2830 | 3028 | 3184 | 3283 | 3339 | 3544 | 3829 | 4450 |
Better Fuel Economy Factory Ratios Increased Power
