Quote:
Originally Posted by ed cobos
I recently had nitrogen put in the tt tires and so far it relieves the tire pressure check as they seem to hold up well. I do obsess about the Lug nuts however and check and tighten them after every trip. While camping, I rarely see anyone checking them.
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I'd love someone to explain the physics on this one.
I had a tire guy say it was because O2 molecules were "smaller".
(Ok, knowing that's not a lie...)
So, being the smartass that I am, I said, "So if the atmosphere is 78% nitrogen and 21% oxygen, if I refill a few times the tire will eventually be almost all Nitrogen, since the tire will allow all the O2 out like a filter?"
I walked off while he babbled with his brain exploding.
It's a scam. And if it's true, just air up a few times and you would have almost all nitrogen in the tires.
The reason to use Nitrogen is a need to know the expansion rate of the gas more accurately. Typically not a problem on travel trailers.