Forum Discussion
dodge_guy
Jul 17, 2020Explorer II
Huntindog wrote:dodge guy wrote:I think that bead lock rims would be required to keep the bead from unseating when suctioning.wanderingbob wrote:
Think about it , it would be near impossible to purge a tire on a rim , could not be done even with a vacumn pump .So your empty tire is sitting there 100 per cent full of air , then they add a little nitrogen to bring it up to pressure . And then charge you or not !
Actually at the least shop I worked at we had a Nitrogen machine for filling tires. You filled them with regular air to seat the bead. Then used the machines vacuum function to suck all the air out. It would collapse the tire. Then you filled it with pure Nitrogen. Done properly it works. But for everyday use it’s unnecessary.
There may be some tires with very stout construction where it might work..... As for collapsing the tire.... That probably isn't good for it.
Now if you were to use nitrogen to seat the bead, and then let most of it escape, then refill it with nitrogen.... That may get it close to 100%
You would think so. And so did I. But after the first set of tires I did I never worried about one coming off the bead. Standard wheels have a small lip in the inside of the rim that keeps the tire from unseating. Once it’s seated it takes a blowout to unseat. And even at that sometimes they stay on.
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