Who has switched to nitrogen for tires?

[SSedan]

I've actually had that happen with truck tires. Not from the water vapour in the air, which is minimal, but from them being stored outside, getting rained on, and then just being mounted. Gives one heck of a bounce. We're talking over 5 kg of ice. Air that's been run through an in-line dryer will still have a bit of water vapour, enough to throw off suspension tuning in a sensitive race car, but not enough to cause a balance problem. There might be enough water vapour in a really large aircraft tire to affect the balance.

Lots of people fill tires from 12volt pumps that just push the water into the tires.
On the aircraft tires though my point was more about the temp extremes, I suspect that what is dry at 90f is not so dry at -40.

 

[Msjulie]

We're really talking F-1 level here for race cars. Also at some small local tracks where there is no electricity nitrogen is about the cheapest and safest bottled gas you can get.

Maybe but any good racer knows you need all that stuff in your trailer; welding stuff, air pumps (for tools and tires), food and beverage

Yeah our lowly racing didn't justify exotic gases in our tires.