Have a few vehicles running nitrogen in the tires, thinking of rigging a nitrogen cylinder at home to keep tire pressures topped off instead of having to stop by the tire store with weather changes, etc. The BMW dealership here in Vegas claims they don't have it available in their service department. Anyone else who has done this or that can recommend a safe way to regulate the supply line and inflator?

Just do what Hvac technician's do. You buy a jug once then pay for refills. You get a regulator and then a 1/4" refrigeration hose. Put a 1/4" service fitting on a air Chuck and you are good to go. All of which are easy to get. Grainger should be able to get the hose, regulator, and fittings needed.

Shouldn't be hard, we use the large nitrogen tanks (look like home gas welding O2 tanks) on our systems. Most have a 580 (I think) fitting on it that we put a regulator on and hook your hose up. Tanks full are 2000psi.

Nitrogen in tires : snake oil

Like has been said, just go to airgas etc and get a bottle. ILet me look when I get home from work, I may have a nitrogen regulator laying around that didnt go high enough (over 200 psi) from when I was rebuilding shocks. If I still have it its yours. that will save you a few bucks. Though honestly there really isnt much reason to run nitrogen in passenger car tires. something like Nascar where you want a consistant inflation/diameter sure (nitrogen is much more thermically stable i.e. wont expand as tire gets warm).

What's the advantage of nitrogen over air!!!!

Not exactly NASCAR, but next best thing. Competition package with 575 hp twin turbo. Also have extremely variable temperatures here in Vegas. Tires don't last long in this environment. I've seen temperature swings as much as 60* from day to night. Air temps as high as 116* at the dock make for some pretty hot roads and tire temps on the nearly hour-long tow getting to Lake Mead, two hours and even hotter temps getting down to Havasu.

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https://www.youtube.com/watch?v=JaCuriPnv4Y

Larger more heat-stable molecule. Less seepage thru tire wall and bead. More consistent pressures making for improved tire wear and safety in extreme environments (from everything I have read).

Hey Chris, hope all is well. One of the biggest benefit ofnit is that it wont hold moisture and rot the tires from the inside out. Ever let air out of a tire and it stinks to high heaven, thats the rhbber decomposing from the heat cycle with reg air.

Wouldn't the tire just wear out before that was ever a concern? Driven hundreds of thousands of miles and decomposition from the inside never was an issue.