Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/80-15 | 300/75-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 35.47 (901) | 33.72 (856.4) | -1.76 (-44.6) -5% |
| Width inches (mm) | 12.8 (325) | 11.81 (300) | -0.98 (-25) -7.7% |
| Circum. inches (mm) | 111.44 (2830.57) | 105.92 (2690.46) | -5.52 (-140.12) -5% |
| Sidewall Height inches (mm) | 10.24 (260) | 8.86 (225) | -1.38 (-35) -13.5% |
| Revolutions per mile (km) | 568.56 (353.28) | 598.17 (371.68) | 29.61 (18.4) 5.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.01 mph (30.59 km/h) |
| 25 mph (40.23 km/h) | 23.76 mph (38.24 km/h) |
| 30 mph (48.28 km/h) | 28.51 mph (45.89 km/h) |
| 35 mph (56.33 km/h) | 33.27 mph (53.54 km/h) |
| 40 mph (64.37 km/h) | 38.02 mph (61.19 km/h) |
| 45 mph (72.42 km/h) | 42.77 mph (68.84 km/h) |
| 50 mph (80.47 km/h) | 47.52 mph (76.48 km/h) |
| 55 mph (88.51 km/h) | 52.28 mph (84.13 km/h) |
| 60 mph (96.56 km/h) | 57.03 mph (91.78 km/h) |
| 65 mph (104.61 km/h) | 61.78 mph (99.43 km/h) |
| 70 mph (112.65 km/h) | 66.53 mph (107.08 km/h) |
| 75 mph (120.7 km/h) | 71.29 mph (114.73 km/h) |
| 80 mph (128.75 km/h) | 76.04 mph (122.37 km/h) |
| 85 mph (136.79 km/h) | 80.79 mph (130.02 km/h) |
| 90 mph (144.84 km/h) | 85.54 mph (137.67 km/h) |
| 95 mph (152.89 km/h) | 90.3 mph (145.32 km/h) |
| 100 mph (160.93 km/h) | 95.05 mph (152.97 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1522 | 1768 | 1904 | 1989 | 2079 | 2144 | 2215 | 2300 | 2416 | 2533 | 2662 | 2766 | 2954 | 3161 | 3323 | 3427 | 3485 | 3699 | 3997 | 4644 |
Better Fuel Economy Factory Ratios Increased Power
