Why Are My Tires Losing Air Pressure. Try just tightening the core. On average tires will lose 1-2 psi per day.

Had the same thing happen to me and it turned out to be a faulty valve stem. Pretty cheap and most parts stores will have one. A long time ago i had a wheel that was a bad casting and air leaked thru the center of the wheel.
The bead can chunk up and result in an air leak.
This simple physical relationship explains precisely why temperature drops lead to lower tire pressure readings. Ad Understanding Tire Inflation. Possible Reasons Why a Tire Loses Air Slowly Wheel Issues. The bead can chunk up and result in an air leak.
