What causes low tire pressure in small cars?

[LaAriel]

Low tire pressure in small cars is often due to low temperatures, as the principle of thermal expansion and contraction leads to insufficient tire pressure. Causes of low tire pressure in cars: Leakage from the tire or valve stem, which requires inspection at an auto repair shop. Deformation of the wheel hub, leading to reduced tire sealing performance. Long-term overloading of the vehicle, causing uneven tire stress. Low temperatures, where thermal expansion and contraction result in insufficient tire pressure. Solutions: For tire leaks, identify the cause and patch or replace the tire. Replace leaking valve stems. If the wheel hub is deformed, consider replacing it. Avoid overloading to ensure even tire stress distribution. To mitigate thermal expansion and contraction, consider inflating with nitrogen gas to minimize its effects.