What Causes the Reddish Color on the Outer Side of New Car Tires?

[McConnor]

New car tires appearing reddish on the outer side is due to dust, stains, and other contaminants adhering to the surface, which is a normal phenomenon. Tire Introduction: Tires are rubber products, so they naturally age even when not in use. Before using stored tires, it is necessary to check for cracks and rubber deterioration. Tire Storage: If stored in suitable conditions—constant temperature and away from light—the aging process of rubber slows significantly, allowing tires to be used even after several years without issues. However, if stored in direct sunlight or areas with large temperature fluctuations, the rubber may crack and deteriorate, making the tires unsuitable for use even if never used before. Rubber that has lost its elasticity cannot provide the necessary grip.