Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/80-16 | 325/85-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 36.47 (926.4) | 37.75 (958.9) | 1.28 (32.5) 3.5% |
| Width inches (mm) | 12.8 (325) | 12.8 (325) | 0 (0) 0% |
| Circum. inches (mm) | 114.58 (2910.37) | 118.6 (3012.47) | 4.02 (102.1) 3.5% |
| Sidewall Height inches (mm) | 10.24 (260) | 10.88 (276.25) | 0.64 (16.25) 6.3% |
| Revolutions per mile (km) | 552.97 (343.6) | 534.23 (331.95) | -18.74 (-11.65) -3.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.7 mph (33.32 km/h) |
| 25 mph (40.23 km/h) | 25.88 mph (41.65 km/h) |
| 30 mph (48.28 km/h) | 31.05 mph (49.97 km/h) |
| 35 mph (56.33 km/h) | 36.23 mph (58.3 km/h) |
| 40 mph (64.37 km/h) | 41.4 mph (66.63 km/h) |
| 45 mph (72.42 km/h) | 46.58 mph (74.96 km/h) |
| 50 mph (80.47 km/h) | 51.75 mph (83.29 km/h) |
| 55 mph (88.51 km/h) | 56.93 mph (91.62 km/h) |
| 60 mph (96.56 km/h) | 62.1 mph (99.95 km/h) |
| 65 mph (104.61 km/h) | 67.28 mph (108.28 km/h) |
| 70 mph (112.65 km/h) | 72.46 mph (116.61 km/h) |
| 75 mph (120.7 km/h) | 77.63 mph (124.94 km/h) |
| 80 mph (128.75 km/h) | 82.81 mph (133.26 km/h) |
| 85 mph (136.79 km/h) | 87.98 mph (141.59 km/h) |
| 90 mph (144.84 km/h) | 93.16 mph (149.92 km/h) |
| 95 mph (152.89 km/h) | 98.33 mph (158.25 km/h) |
| 100 mph (160.93 km/h) | 103.51 mph (166.58 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1360 | 1579 | 1701 | 1776 | 1857 | 1915 | 1979 | 2054 | 2158 | 2262 | 2378 | 2470 | 2638 | 2823 | 2968 | 3060 | 3112 | 3303 | 3569 | 4148 |
Better Fuel Economy Factory Ratios Increased Power
