Originally Posted by
terrymorse
That makes no sense at all.
The valve stem obviously is protruding the farthest when the tire is fully inflated. Try pushing the valve into the rim under full inflation. You have to overcome the pressure pushing at the base of the stem, I’d guess roughly 40 pounds.
When the tire is deflated, that 40-some-odd outward force goes away.
Please read better. I inflate the tire to whatever pressure and tighten the nut. The valve is pulled as far as 80–120 PSI allow.
When the tube is less full I can easily lift the stem a little.
I know some folks worship Sheldon Brown, but I also know I have done decades of riding and changed hundreds of flat—this includes a stint as tire repairer on a cross-country tour with more than two dozen riders, plus decades of urban commuting in terrible conditions—and I have Never faced a stuck nut.
Not sure what is wrong with everyone else and don’t care. It has Never happened to me.
Sucks to be you guys, I guess.
Try gently lifting the valve stem …