re: Nitrogen in your tires

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The advantage to pure nitrogen is you know it's dry.

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My air compressor runs through 3 particulate/ moisture filters, as well as a 20’ cooled section of line with two moisture separator drops through a cooler before my hose reel. My air is pretty dry as well.

That regular old air I’m using is ~79% nitrogen. I’ve also heard that the molecules of nitrogen are smaller than the molecules of oxygen, thus, they leak slower. My contention is that since O2 leaks slower than N2, the mixture left in my tires when the pressure gets low is much closer to 100% N2 than before. So the 79% mixture I put in is only dilluting the near 100% mixture to around 90%. Do that a couple times, and I’m pretty close to 100% N2, for free. Unless the N2 guys call bullshite on that, in which case, their whole argument is bullshite.