When is the last time you had the air changed in your tires?

You might want to turn them inside out also so both the inner and outer portions have the same exposure to the atmosphere.

No need to change the air in your tires but you should check the air pressure regularly.

Nitrogen in tires is becoming a popular replacement for standard air. Nitrogen is all around us... the air we breathe is 78% nitrogen, 21% oxygen and the rest is small amounts of other gasses. When it comes to tire inflation, nitrogen has many advantages over oxygen. With nitrogen tire inflation, improvements can be noted in a vehicle's handling, fuel efficiency and tire life through better tire pressure retention, improved fuel economy and cooler running tire temperatures. Here at the Get Nitrogen Institute our goal is to provide consumers, over-the-road truckers, fleet managers and others information about the benefits of using nitrogen in tires.

You do not actually change the air in your tires. You are just supposed to check how much pressure your tires have on a monthly basis. Every vehicle and tire is different in terms of what it requires, but an overwhelming majority of vehicle run there tire pressures between 30 and 35psi

Gas mileage decreases 1% for each 10 lbs of underinflation so check them at every fill up of your tank. Add nitrogen for even further fuel savings.

North Carolina has state inspections

http://www.carolina-tire.com/

HA HA HA This is one of the funniest questions I have ever seen!! I really hope your joking

I change mine with every oil change - I also change my brake light fluid - can't be too careful you know!

Really?

why would you want to ? air is air, old or new.

you cannot be serious