Tire Pressure Issue

[Pedal Wench]

I think some of it is that unavoidable "pffft!" of air when you release the pump from the presta valve. Frustrating .

****If you inflate to 120psi you get an extra day maybe.

I always thought that last 'pfffft' is the air that's in the pump's hose, not air from your tire. Presta's self-seal with each pump -- well, at least that's what I thought.