Nitrogen tires

Yup. Nitrogen is supposed to not hold moisture which can lead to corrosion of the goofy government-idiot-mandated tire pressure monitoring systems. That isn't much of a problem because there's just so much moisture that goes in with the air. It doesn't keep building up unless you have a slow leak and have to keep pumping the tire up like I do on my van every few days. Even then, when you pull the tire off, there's no rust in there.