Why are the tires of a newly purchased car slightly yellow?

1 Answers
DiJayla
07/30/25 8:38am
Newly purchased car tires may appear slightly yellow due to the use of inferior tire wax. Here are other reasons for tire yellowing: 1. Brake pad metal powder rust: Brake pads contain iron, which wears down and produces powder during braking. When this powder mixes with water, it forms rust water that flows to the tire sidewalls. Over time, the sidewalls turn yellow. 2. Dust traces: If tires frequently enter and exit construction sites, the sidewalls can easily turn yellow. Without regular vehicle cleaning, a yellowish tint from dirt can seep into the tire rubber, making it difficult to clean, which is a normal yellowing condition. 3. Tire wax oxidation yellowing: New tires are often coated with a layer of tire wax. For vehicles frequently parked outdoors, the sidewalls may yellow as the tire wax oxidizes and turns yellow in high-temperature outdoor environments. 4. Premature oxidation of tire protectants: Yellowing due to premature oxidation of tire protectants is an abnormal phenomenon. Generally, when tires are not cleaned properly before applying protectants, it accelerates the oxidation of the protectants, leading to yellowing.
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