Originally Posted by
CommuterRun
Are you sure the air you're hearing escape is coming from the tire and not the hose on the pump? Are you checking the tire pressure with a gauge, other than the one on the pump where the air has to fill the hose before getting to the gauge?
I'm with this guy--I sweated that for years until a mechanic told me it was just air escaping from the hose. A three-foot length of air hose at 100psi or whatever will take a second or so to equalize, and you may be hearing that.