Why is the tire pressure of one tire always low?

[DiJude]

When you notice that one tire always has low pressure or the left front tire pressure is lower than the other three, it may be due to slow air leakage in the underinflated tire, which naturally results in lower pressure over time. Alternatively, the tire might have been punctured by a nail, causing air leakage. When tire pressure is low, it should be inspected, repaired, or replaced promptly to avoid safety hazards. Solutions for insufficient tire pressure are as follows: If no visible damage is found, simply inflate the tire to normal pressure and reset the tire pressure system; If inspection reveals a puncture, drive to a tire shop promptly for a repair, then reinflate the tire; If the tire pressure warning reappears after inflation despite no puncture, it may be due to air leakage caused by a deformed wheel rim. It is recommended to inspect and replace the wheel rim.