Why can't a spare tire be used for a long time?

[Chris]

The reason why a spare tire cannot be used for a long time is: the friction coefficient of the spare tire is different from that of other tires, the ground adhesion is different, and the air pressure is different. Long-term use will have a certain impact on the vehicle's braking system, steering system, and suspension system, bringing great hidden dangers to driving safety. Precautions for using a spare tire are: 1. Regularly check the spare tire; 2. It should not be used for a long time; 3. The spare tire should not participate in tire rotation; 4. Avoid placing it together with oil products. Spare tires are divided into full-size spare tires, non-full-size spare tires, and zero-pressure tires. Depending on the vehicle model, they are usually placed: under the trunk floor, hung under the rear of the car, or fixed outside the trunk door.