Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/80-15 | 300/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 35.47 (901) | 35.9 (911.8) | 0.43 (10.8) 1.2% |
| Width inches (mm) | 12.8 (325) | 11.81 (300) | -0.98 (-25) -7.7% |
| Circum. inches (mm) | 111.44 (2830.57) | 112.78 (2864.5) | 1.34 (33.93) 1.2% |
| Sidewall Height inches (mm) | 10.24 (260) | 9.45 (240) | -0.79 (-20) -7.7% |
| Revolutions per mile (km) | 568.56 (353.28) | 561.82 (349.1) | -6.73 (-4.18) -1.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.24 mph (32.57 km/h) |
| 25 mph (40.23 km/h) | 25.3 mph (40.72 km/h) |
| 30 mph (48.28 km/h) | 30.36 mph (48.86 km/h) |
| 35 mph (56.33 km/h) | 35.42 mph (57 km/h) |
| 40 mph (64.37 km/h) | 40.48 mph (65.15 km/h) |
| 45 mph (72.42 km/h) | 45.54 mph (73.29 km/h) |
| 50 mph (80.47 km/h) | 50.6 mph (81.43 km/h) |
| 55 mph (88.51 km/h) | 55.66 mph (89.58 km/h) |
| 60 mph (96.56 km/h) | 60.72 mph (97.72 km/h) |
| 65 mph (104.61 km/h) | 65.78 mph (105.86 km/h) |
| 70 mph (112.65 km/h) | 70.84 mph (114 km/h) |
| 75 mph (120.7 km/h) | 75.9 mph (122.15 km/h) |
| 80 mph (128.75 km/h) | 80.96 mph (130.29 km/h) |
| 85 mph (136.79 km/h) | 86.02 mph (138.43 km/h) |
| 90 mph (144.84 km/h) | 91.08 mph (146.58 km/h) |
| 95 mph (152.89 km/h) | 96.14 mph (154.72 km/h) |
| 100 mph (160.93 km/h) | 101.2 mph (162.86 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1430 | 1661 | 1789 | 1868 | 1953 | 2014 | 2081 | 2160 | 2269 | 2379 | 2501 | 2598 | 2774 | 2969 | 3121 | 3218 | 3273 | 3474 | 3754 | 4362 |
Better Fuel Economy Factory Ratios Increased Power
