1. The molecular structure of iron determines the service life of steel wheel hub. In other words, when you pass some bumpy roads, the steel wheels will be slightly deformed after being hit. After a long time, there will be obvious deformation here, which will cause the car to swing from side to side during driving;

2. The service life of aluminum wheel hub is determined by the molecular structure of aluminum. In other words, aluminum hub has better cushioning performance and lighter weight than steel hub, so it will bear less force when it is impacted by external force, so its service life is relatively long. But it will be deformed when it encounters strong external impact;

3. If your original car is made of steel wheels, it is suggested that you consider changing aluminum wheels after driving for about 50,000 kilometers, so as not to waste resources. In my opinion, both steel and aluminum are used the same, but they have different personal preferences and opinions. No matter how good the hub is, it will retire when it encounters a strong external impact.