I have been doing some research on using nitrogen in tires, but have yet to find out if it really is worth the extra money or not to put in your tires. I was hoping to see if you guys have used nitrogen in your tires and if you noticed any difference. I searched around the forums, but just found a lot of the facts I already knew from researching about it. I would like to know if any of you actually use it in your tires.

Haven't, but if it was available and inexpensive I'd consider it.

Nitrogen molecules are larger and don't migrate through the rubber as easily. Nitrogen is also more thermally stable so it doesn't react as much to temperature variations.

I use air. It's worked in my cars for 38 years, and air is available everywhere.

I run nitrogen in my tires, but only because it is free for me to do. As far as I can see in comparison between air and nitrogen the temperature fluctuation is nearly the same. It has been this way on many of my vehicles. It is also inconvenient to find a place to fill your tires that isn't going to charge you. I do believe that the tire used depends on how well it works. My truck tires would stay at the same pressure during a 3 month period. My car tires will drop pressure as normal with no leaks. If you take care of you car on a regular basis nitrogen won't be of much benefit due to the cost. Plus there is already 78% nitrogen in air.

If it was available easily I would have kept the N2 in the tires, but my compressor is too damn easy...

While I will not stop a shop from using nitrogen to fill or top off a tire, I will not pay extra for it.

I saw an article about a year ago that said even GM does not think it is worth the extra expense to put nitrogen in tires. And if I remember my high school science the atmosphere is 70% nitrogen anyway.

The biggest advantage, as far as a few engineers I've talked to can see (note: not tire engineers, but PEs) is that nitrogen is dry. If you could completely dehydrate the air going into a tire, regular air would be just as good if not better.

It's the water heating up that causes most of the fluctuation in a tire while it's warming up.

RwP

Thanks for the replies. I am glad I have stuck in oxygen then and not switched over to nitrogen here then. It never seemed to be worth it to me and a few mechanics told me that I'm better off sticking with just regular air.

One other factor worthy of consideration: air is by nature 78% Nitrogen roughly. So...the only difference is 22% of the total composition. Just a little food for thought!

I used to use nitrogen in my crx and my 4x4 silverado. I saw a noticeable difference in the handling in both vehicles. The tires also seemed to last longer.