[FXRP]

Use nitrogen. It won’t expand or contract with heat changes.

If you really want your tires to last, use hydrogen. It is the lightest gas and will significantly reduce the weight load on your tires, making them last much longer.

[LesbianThespianGymnasticMidget]

Hydrogen in a tire.... BWAHAHAHAHAHAHA

That is funny. It is hard enough to keep air in them and you want something that will literally slowly leak out through the rubber never mind by the bead or schrader valve?

Good luck with that.

[Moltke]

Use nitrogen. It won’t expand or contract with heat changes.

Of course it does. The difference to using just "plain air" from your local gas station is the lack of water content in pure nitrogen. The water content in "plain air" is more susceptible to temperature changes...if you have a compressor with a water separator to provide dry air..same same...