The spare tire doesn't do nothing, it must be maintained.

1. Regularly check the tire pressure. If a spare tire is replaced, it will not work as it should, and must be checked regularly.

2. Anti-corrosion. Many people like to put things like lube, glass water, etc. in the trunk because once opened, there will be liquids spilling out of the trunk. Those who have experience in wading should also clean up the spare tire as soon as possible and dry the spare tire. Liquid is corrosive to rubber to a certain extent, and if it is not cleaned for a long time, it will cause local aging of the tire, and there is a certain safety risk in use.

3. Regular replacement. No matter how big the tire is, even if it is not used, it will be forcibly eliminated after six years of production. Tire aging is a big safety hazard.

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