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Nitrogen will keep your tires running cooler (longer life),

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Can you provide anything to back that up?

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keeps moisture away, less corrisoin between rim and tire bead

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It doesn't keep moisture AWAY, it's just that hopefully there's less moisture in the N2 to begin with. Since there's much less O2, rust/corrosion is slowed way down.

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air pressure doesn't change as much,

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I'm pretty sure the reason for this is the fact that there's not much moisture in N2 Atmosphere is largely N2, anyhow, and I can't imagine that the difference in delta T change for N2 and O2 is very much.

You PROBABLY could accompomplish the same thing with CO2, and except for inhibiting rust/ corrosion, you could probably use dried air the point being that there's nothing really magic about N2

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