Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/25-20 | 375/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.4 (670.5) | 34.76 (883) | 8.37 (212.5) 31.7% |
| Width inches (mm) | 12.8 (325) | 14.76 (375) | 1.97 (50) 15.4% |
| Circum. inches (mm) | 82.93 (2106.44) | 109.21 (2774.03) | 26.28 (667.59) 31.7% |
| Sidewall Height inches (mm) | 3.2 (81.25) | 7.38 (187.5) | 4.18 (106.25) 130.8% |
| Revolutions per mile (km) | 764.01 (474.73) | 580.15 (360.49) | -183.86 (-114.25) -24.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 26.34 mph (42.39 km/h) |
| 25 mph (40.23 km/h) | 32.92 mph (52.98 km/h) |
| 30 mph (48.28 km/h) | 39.51 mph (63.58 km/h) |
| 35 mph (56.33 km/h) | 46.09 mph (74.18 km/h) |
| 40 mph (64.37 km/h) | 52.68 mph (84.78 km/h) |
| 45 mph (72.42 km/h) | 59.26 mph (95.37 km/h) |
| 50 mph (80.47 km/h) | 65.85 mph (105.97 km/h) |
| 55 mph (88.51 km/h) | 72.43 mph (116.57 km/h) |
| 60 mph (96.56 km/h) | 79.02 mph (127.16 km/h) |
| 65 mph (104.61 km/h) | 85.6 mph (137.76 km/h) |
| 70 mph (112.65 km/h) | 92.18 mph (148.36 km/h) |
| 75 mph (120.7 km/h) | 98.77 mph (158.95 km/h) |
| 80 mph (128.75 km/h) | 105.35 mph (169.55 km/h) |
| 85 mph (136.79 km/h) | 111.94 mph (180.15 km/h) |
| 90 mph (144.84 km/h) | 118.52 mph (190.75 km/h) |
| 95 mph (152.89 km/h) | 125.11 mph (201.34 km/h) |
| 100 mph (160.93 km/h) | 131.69 mph (211.94 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1476 | 1715 | 1847 | 1929 | 2017 | 2079 | 2149 | 2230 | 2343 | 2456 | 2582 | 2683 | 2865 | 3066 | 3223 | 3323 | 3380 | 3587 | 3876 | 4504 |
Better Fuel Economy Factory Ratios Increased Power
