What Causes Yellowing of Tires? How to Clean Them?
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Automotive tire yellowing may be caused by brake pad powder-like metal rust adhering to the tire sidewalls, traces of dust, oxidation and yellowing of tire wax, premature oxidation of tire care products, or premature aging of rubber. When tires turn yellow, it is recommended to use a high-quality hard-bristle brush, citrus degreaser or V3 iron remover, and tire care products for cleaning. Below are the related scenarios: Brake Pad Powder-like Metal Rust: Since brake pads contain iron, they wear down and produce powder during braking. When this powder comes into contact with water, it forms rust water that flows onto the tire sidewalls. Over time, the sidewalls will turn yellow. Traces of Dust: If the tires frequently enter and exit construction sites, the sidewalls are highly prone to yellowing. Without a regular habit of cleaning the vehicle, the tire rubber may absorb a yellowish tint from the dust, which is very difficult to clean. However, this is a normal yellowing condition. Oxidation and Yellowing of Tire Wax: New tires are coated with a layer of tire wax. For vehicles often parked outdoors, the sidewalls are susceptible to yellowing due to the oxidation of tire wax under high temperatures in open-air environments. Another scenario is when low-quality tire wax is used, which may also cause tire yellowing. Premature Oxidation of Tire Care Products: Premature oxidation and yellowing of tire care products is an abnormal phenomenon. In most cases, when tire care products are applied directly without thorough cleaning, it accelerates their oxidation, leading to yellowing. Premature Aging of Rubber: This phenomenon mostly occurs when the vehicle is parked under direct sunlight for extended periods. Over time, the tire rubber will show signs of premature aging and turn yellow.