Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/30-21 | 335/30-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.68 (728.4) | 28.91 (734.4) | 0.24 (6) 0.8% |
| Width inches (mm) | 12.8 (325) | 13.19 (335) | 0.39 (10) 3.1% |
| Circum. inches (mm) | 90.09 (2288.34) | 90.83 (2307.19) | 0.74 (18.85) 0.8% |
| Sidewall Height inches (mm) | 3.84 (97.5) | 3.96 (100.5) | 0.12 (3) 3.1% |
| Revolutions per mile (km) | 703.28 (437) | 697.54 (433.43) | -5.75 (-3.57) -0.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.16 mph (32.45 km/h) |
| 25 mph (40.23 km/h) | 25.21 mph (40.57 km/h) |
| 30 mph (48.28 km/h) | 30.25 mph (48.68 km/h) |
| 35 mph (56.33 km/h) | 35.29 mph (56.79 km/h) |
| 40 mph (64.37 km/h) | 40.33 mph (64.9 km/h) |
| 45 mph (72.42 km/h) | 45.37 mph (73.02 km/h) |
| 50 mph (80.47 km/h) | 50.41 mph (81.13 km/h) |
| 55 mph (88.51 km/h) | 55.45 mph (89.24 km/h) |
| 60 mph (96.56 km/h) | 60.49 mph (97.36 km/h) |
| 65 mph (104.61 km/h) | 65.54 mph (105.47 km/h) |
| 70 mph (112.65 km/h) | 70.58 mph (113.58 km/h) |
| 75 mph (120.7 km/h) | 75.62 mph (121.7 km/h) |
| 80 mph (128.75 km/h) | 80.66 mph (129.81 km/h) |
| 85 mph (136.79 km/h) | 85.7 mph (137.92 km/h) |
| 90 mph (144.84 km/h) | 90.74 mph (146.03 km/h) |
| 95 mph (152.89 km/h) | 95.78 mph (154.15 km/h) |
| 100 mph (160.93 km/h) | 100.82 mph (162.26 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1775 | 2062 | 2221 | 2319 | 2425 | 2500 | 2583 | 2682 | 2817 | 2953 | 3105 | 3225 | 3444 | 3686 | 3875 | 3996 | 4064 | 4313 | 4661 | 5416 |
Better Fuel Economy Factory Ratios Increased Power
