Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/80-16 | 395/85-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 36.47 (926.4) | 46.44 (1179.5) | 9.96 (253.1) 27.3% |
| Width inches (mm) | 12.8 (325) | 15.55 (395) | 2.76 (70) 21.5% |
| Circum. inches (mm) | 114.58 (2910.37) | 145.89 (3705.51) | 31.3 (795.14) 27.3% |
| Sidewall Height inches (mm) | 10.24 (260) | 13.22 (335.75) | 2.98 (75.75) 29.1% |
| Revolutions per mile (km) | 552.97 (343.6) | 434.31 (269.87) | -118.66 (-73.73) -21.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.46 mph (40.98 km/h) |
| 25 mph (40.23 km/h) | 31.83 mph (51.23 km/h) |
| 30 mph (48.28 km/h) | 38.2 mph (61.47 km/h) |
| 35 mph (56.33 km/h) | 44.56 mph (71.72 km/h) |
| 40 mph (64.37 km/h) | 50.93 mph (81.96 km/h) |
| 45 mph (72.42 km/h) | 57.29 mph (92.21 km/h) |
| 50 mph (80.47 km/h) | 63.66 mph (102.45 km/h) |
| 55 mph (88.51 km/h) | 70.03 mph (112.7 km/h) |
| 60 mph (96.56 km/h) | 76.39 mph (122.94 km/h) |
| 65 mph (104.61 km/h) | 82.76 mph (133.19 km/h) |
| 70 mph (112.65 km/h) | 89.12 mph (143.43 km/h) |
| 75 mph (120.7 km/h) | 95.49 mph (153.68 km/h) |
| 80 mph (128.75 km/h) | 101.86 mph (163.92 km/h) |
| 85 mph (136.79 km/h) | 108.22 mph (174.17 km/h) |
| 90 mph (144.84 km/h) | 114.59 mph (184.41 km/h) |
| 95 mph (152.89 km/h) | 120.95 mph (194.66 km/h) |
| 100 mph (160.93 km/h) | 127.32 mph (204.9 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
