Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/80-16 | 315/70-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 36.47 (926.4) | 33.36 (847.4) | -3.11 (-79) -8.5% |
| Width inches (mm) | 12.8 (325) | 12.4 (315) | -0.39 (-10) -3.1% |
| Circum. inches (mm) | 114.58 (2910.37) | 104.81 (2662.19) | -9.77 (-248.19) -8.5% |
| Sidewall Height inches (mm) | 10.24 (260) | 8.68 (220.5) | -1.56 (-39.5) -15.2% |
| Revolutions per mile (km) | 552.97 (343.6) | 604.52 (375.63) | 51.55 (32.03) 9.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.29 mph (29.44 km/h) |
| 25 mph (40.23 km/h) | 22.87 mph (36.8 km/h) |
| 30 mph (48.28 km/h) | 27.44 mph (44.16 km/h) |
| 35 mph (56.33 km/h) | 32.02 mph (51.52 km/h) |
| 40 mph (64.37 km/h) | 36.59 mph (58.88 km/h) |
| 45 mph (72.42 km/h) | 41.16 mph (66.24 km/h) |
| 50 mph (80.47 km/h) | 45.74 mph (73.61 km/h) |
| 55 mph (88.51 km/h) | 50.31 mph (80.97 km/h) |
| 60 mph (96.56 km/h) | 54.88 mph (88.33 km/h) |
| 65 mph (104.61 km/h) | 59.46 mph (95.69 km/h) |
| 70 mph (112.65 km/h) | 64.03 mph (103.05 km/h) |
| 75 mph (120.7 km/h) | 68.6 mph (110.41 km/h) |
| 80 mph (128.75 km/h) | 73.18 mph (117.77 km/h) |
| 85 mph (136.79 km/h) | 77.75 mph (125.13 km/h) |
| 90 mph (144.84 km/h) | 82.33 mph (132.49 km/h) |
| 95 mph (152.89 km/h) | 86.9 mph (139.85 km/h) |
| 100 mph (160.93 km/h) | 91.47 mph (147.21 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1538 | 1787 | 1925 | 2010 | 2101 | 2167 | 2239 | 2324 | 2442 | 2560 | 2691 | 2795 | 2985 | 3195 | 3358 | 3463 | 3522 | 3738 | 4039 | 4694 |
Better Fuel Economy Factory Ratios Increased Power
