What are the advantages of using other gases for pumping in your car tires?

There's this one shop at my area that doesn't inflate tires using air. But instead, use nitrogen. Is there really a difference? The price is just slightly higher and is worth the curiosity drive but what advantages does it have over regular air? And can other types of gases be used instead of nitrgoen and air? How about helium? Or Hyrdrogen? How about Carbon? Or, heck, even methane?What are the advantages of using other gases for pumping in your car tires?
the advantage is it makes the mechanic a little more money...............
I really don't see the differance in it all the air is doing is keeping the tire inflated. the is no need to put anything but air in a tire. It is not going to make the car lighter or faster. It sounds like they are just trying to make a little extra moneyWhat are the advantages of using other gases for pumping in your car tires?
You can lose like 1 or 2 pounds of air each month. Nitrogen slows down the loss so your tires stay properly inflated longer. Also Ive read that it wont degrade the rubber inside the tire since it contains no oxygen or water vapor.

I dont know about if its worth it though. I didnt go for it since the tire shop wanted like 8.00 per tire more. But I did get to read the brochure while I waited.
In a regular car the H2O in your tires are just fine, some racers believe in using gas combinations to reduce heat for frictional purposes but in your case air is just fine. Dont waste your money on gimmicks! Good luck-StephenWhat are the advantages of using other gases for pumping in your car tires?
The main reason they use nitrogen in tires is because it does not expand and contract the way air does. As a tire heats up when you drive, the air expands and the pressure goes up. In very cold weather the tire could be under-inflated. If the tire is filled with nitrogen only, the pressure remains relatively constant. I think it's a bunch of hooey too! But that's the logic behind it.