Originally Posted by
SJX426
I think that sometimes it is an issue of how much flex is induced buy pumping a tire up with a hand pump. High pressure is hard to pump against and sometimes there is a lot of movement in the process.
My bet too. I suspect that happens A LOT. Back when I used a full sized frame pump to fix my flats, I'd stabilize the valve stem and wheel against a tree or telephone pole while I aired my tire. Today I use a Road Morph pump because it has a hose to minimize valve stem flex during re-inflation.
__________________
My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.