What are the reasons for slow tire air leakage?

[AlanaLynn]

The reasons for slow tire air leakage are valve core leakage or damage to the tire sidewall. The specific reasons are introduced as follows: Valve core leakage: If you pour water on the valve core and find bubbles forming, you can confirm that it's valve core leakage. In this case, simply loosen the dust cap a bit, as being too tight can press against the valve core, causing air leakage. Tire sidewall damage: Besides the tire tread being easily punctured by foreign objects, the tire sidewalls and inner edges can also be damaged. Some drivers have poor spatial awareness when parking, frequently scraping the tire sidewalls against curbs. Once or twice may not cause issues, but repeated occurrences can wear down the tire sidewalls.