What to Do When Your Car Key Battery Dies?
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Run-flat tires are technically known as air-maintaining tires. The difference between them and regular tires is that when a tire is punctured and loses pressure, a regular tire will be flattened by the weight of the car, causing the tire to detach from the rim and rendering the vehicle immobile. In contrast, run-flat tires can support the tire with their thicker sidewall structure, so even if the tire loses pressure, it won't be flattened.