Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/25-20 | 325/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.4 (670.5) | 28.96 (735.5) | 2.56 (65) 9.7% |
| Width inches (mm) | 12.8 (325) | 12.8 (325) | 0 (0) 0% |
| Circum. inches (mm) | 82.93 (2106.44) | 90.97 (2310.64) | 8.04 (204.2) 9.7% |
| Sidewall Height inches (mm) | 3.2 (81.25) | 4.48 (113.75) | 1.28 (32.5) 40% |
| Revolutions per mile (km) | 764.01 (474.73) | 696.49 (432.78) | -67.52 (-41.95) -8.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.94 mph (35.31 km/h) |
| 25 mph (40.23 km/h) | 27.42 mph (44.13 km/h) |
| 30 mph (48.28 km/h) | 32.91 mph (52.96 km/h) |
| 35 mph (56.33 km/h) | 38.39 mph (61.79 km/h) |
| 40 mph (64.37 km/h) | 43.88 mph (70.61 km/h) |
| 45 mph (72.42 km/h) | 49.36 mph (79.44 km/h) |
| 50 mph (80.47 km/h) | 54.85 mph (88.27 km/h) |
| 55 mph (88.51 km/h) | 60.33 mph (97.09 km/h) |
| 60 mph (96.56 km/h) | 65.82 mph (105.92 km/h) |
| 65 mph (104.61 km/h) | 71.3 mph (114.75 km/h) |
| 70 mph (112.65 km/h) | 76.79 mph (123.58 km/h) |
| 75 mph (120.7 km/h) | 82.27 mph (132.4 km/h) |
| 80 mph (128.75 km/h) | 87.76 mph (141.23 km/h) |
| 85 mph (136.79 km/h) | 93.24 mph (150.06 km/h) |
| 90 mph (144.84 km/h) | 98.72 mph (158.88 km/h) |
| 95 mph (152.89 km/h) | 104.21 mph (167.71 km/h) |
| 100 mph (160.93 km/h) | 109.69 mph (176.54 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1772 | 2059 | 2217 | 2315 | 2421 | 2497 | 2579 | 2678 | 2813 | 2949 | 3100 | 3221 | 3439 | 3681 | 3869 | 3990 | 4058 | 4307 | 4654 | 5408 |
Better Fuel Economy Factory Ratios Increased Power
