Originally posted by weargle:
Originally posted by JCSVT:
At the last tracday I went to, alot guys were using nitrogen because the temp didn't change.



Of course the temperature changed. Have you ever even felt a tire after a track session? Why do you think that racers use pyrometers?

Nitrogen gives a predictable temperature change because it's dry and isn't influenced by water.



Yeah, it's a much smaller change. This is a huge deal with race tires. You get them too hot and they will start chunking.