Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/25-20 | 375/70-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.4 (670.5) | 40.67 (1033) | 14.27 (362.5) 54.1% |
| Width inches (mm) | 12.8 (325) | 14.76 (375) | 1.97 (50) 15.4% |
| Circum. inches (mm) | 82.93 (2106.44) | 127.77 (3245.27) | 44.84 (1138.83) 54.1% |
| Sidewall Height inches (mm) | 3.2 (81.25) | 10.33 (262.5) | 7.14 (181.25) 223.1% |
| Revolutions per mile (km) | 764.01 (474.73) | 495.91 (308.14) | -268.11 (-166.59) -35.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 30.81 mph (49.59 km/h) |
| 25 mph (40.23 km/h) | 38.52 mph (61.99 km/h) |
| 30 mph (48.28 km/h) | 46.22 mph (74.38 km/h) |
| 35 mph (56.33 km/h) | 53.92 mph (86.78 km/h) |
| 40 mph (64.37 km/h) | 61.63 mph (99.18 km/h) |
| 45 mph (72.42 km/h) | 69.33 mph (111.57 km/h) |
| 50 mph (80.47 km/h) | 77.03 mph (123.97 km/h) |
| 55 mph (88.51 km/h) | 84.74 mph (136.37 km/h) |
| 60 mph (96.56 km/h) | 92.44 mph (148.77 km/h) |
| 65 mph (104.61 km/h) | 100.14 mph (161.16 km/h) |
| 70 mph (112.65 km/h) | 107.84 mph (173.56 km/h) |
| 75 mph (120.7 km/h) | 115.55 mph (185.96 km/h) |
| 80 mph (128.75 km/h) | 123.25 mph (198.35 km/h) |
| 85 mph (136.79 km/h) | 130.95 mph (210.75 km/h) |
| 90 mph (144.84 km/h) | 138.66 mph (223.15 km/h) |
| 95 mph (152.89 km/h) | 146.36 mph (235.55 km/h) |
| 100 mph (160.93 km/h) | 154.06 mph (247.94 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1262 | 1466 | 1579 | 1649 | 1724 | 1778 | 1837 | 1906 | 2003 | 2100 | 2207 | 2293 | 2449 | 2621 | 2755 | 2841 | 2889 | 3066 | 3313 | 3850 |
Better Fuel Economy Factory Ratios Increased Power
