[BuckyFan]

I have nitrogen in my tires, but my dealer put it in for free. They always fill the tires with Nitrogen when you come in.

 

[BuckyFan]

I have nitrogen in my tires. Came free from the dealer. Keep in mind that nitrogen is already 78% of air anyways.

I have heard that its supposed to keep your tires more evenly inflated as well as not being reactive with the rubber since its an inert gas.