Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/25-20 | 325/20-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.4 (670.5) | 25.12 (638) | -1.28 (-32.5) -4.8% |
| Width inches (mm) | 12.8 (325) | 12.8 (325) | 0 (0) 0% |
| Circum. inches (mm) | 82.93 (2106.44) | 78.91 (2004.34) | -4.02 (-102.1) -4.8% |
| Sidewall Height inches (mm) | 3.2 (81.25) | 2.56 (65) | -0.64 (-16.25) -20% |
| Revolutions per mile (km) | 764.01 (474.73) | 802.93 (498.92) | 38.92 (24.18) 5.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.03 mph (30.63 km/h) |
| 25 mph (40.23 km/h) | 23.79 mph (38.28 km/h) |
| 30 mph (48.28 km/h) | 28.55 mph (45.94 km/h) |
| 35 mph (56.33 km/h) | 33.3 mph (53.6 km/h) |
| 40 mph (64.37 km/h) | 38.06 mph (61.25 km/h) |
| 45 mph (72.42 km/h) | 42.82 mph (68.91 km/h) |
| 50 mph (80.47 km/h) | 47.58 mph (76.57 km/h) |
| 55 mph (88.51 km/h) | 52.33 mph (84.22 km/h) |
| 60 mph (96.56 km/h) | 57.09 mph (91.88 km/h) |
| 65 mph (104.61 km/h) | 61.85 mph (99.54 km/h) |
| 70 mph (112.65 km/h) | 66.61 mph (107.19 km/h) |
| 75 mph (120.7 km/h) | 71.36 mph (114.85 km/h) |
| 80 mph (128.75 km/h) | 76.12 mph (122.51 km/h) |
| 85 mph (136.79 km/h) | 80.88 mph (130.16 km/h) |
| 90 mph (144.84 km/h) | 85.64 mph (137.82 km/h) |
| 95 mph (152.89 km/h) | 90.4 mph (145.48 km/h) |
| 100 mph (160.93 km/h) | 95.15 mph (153.13 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2043 | 2374 | 2556 | 2669 | 2791 | 2878 | 2974 | 3087 | 3243 | 3400 | 3574 | 3713 | 3965 | 4243 | 4460 | 4600 | 4678 | 4965 | 5365 | 6234 |
Better Fuel Economy Factory Ratios Increased Power
