What Causes Black Dust on Car Wheels?

[StAlivia]

Black dust on the wheels is mostly caused by the friction between the brake pads and brake discs. This is a normal phenomenon and nothing to worry about. It can be cleaned during car washing. If left uncleaned for a long time, the wheels may discolor. More details are as follows: 1. The wheel hub is a cylindrical metal component that supports the tire from the inside and is mounted on the axle at the center. It is also called a rim, steel ring, or wheel. Wheel hubs come in various types based on diameter, width, manufacturing method, and material. 2. Depending on the characteristics and requirements of different vehicle models, the surface treatment process of the wheel hub also varies, mainly divided into painting and plating. For ordinary vehicle models, less consideration is given to the appearance of the wheel hub, with good heat dissipation being a basic requirement. The process generally involves painting treatment, which means spraying first and then baking, making it cost-effective with bright and long-lasting colors. Even if the vehicle is scrapped, the color of the wheel hub remains unchanged.