This sounded crazy to me when I heard it, but has anyone in this forum ever heard of putting Nitrogen in your tires of the infinity instead of air ? I hear it improves gas mileage but isn't it dangerous ?

 

Why would it be dangerous? About 80% of the air you breath is nitrogen. 80% is also what is in your tires. Nitrogen doesn't change much or at all in pressure when temperature change. Pure nitrogen would help keep your tire pressure consistent. Nitrogen is also what scuba divers use to breath under water. Hope that answers your question

 

Not dangerous, but also doesn't really help. The theory is that it doesn't lose pressure as fast (larger molecules), and it doesn't change pressure as much (drier). But in practice, on the street, and if you check your tire pressures from time-to-time, not really a difference. Mine came free that way, but the tires are now running air - def not worth paying for.

 

It will not improve gas mileage. Good one.

 

I think the theory of Nitrogen filled tires improving your gas millage came from Nitrogen keeping your tire pressure better then Air.

You will get worse gas millage if your tires are deflated, but if you keep an eye on your tires then you have nothing to worry about and Nitrogen aint going to help it.


Now if you put Helium in your tires so that your car floats barely touching the asphalt........that might help your gas millage.........and that IS dangerous........and you gonna need to get some big a$$ tires.

 

I have been running Nitrogen in my tires on my Tahoe for 3+ years (free from Costco for members)

It prolongs tire life by maintaing proper inflation without fluctionations and helps even treadware.

 

when i was doing my christmas shopping, i saw this gift card like voucher for sale at bestbuy that entitles the holder to fill their tires with nitrogen. if i remember it right, it cost about $30.00. i believe they have a nitrogen filling station at their installation bay.

 

Did you have to buy the tires from Costco in order to get them filled with Nitrogen for free? I'm a Costco member but I have never purchased tires from them (for my car at least) so I wonder if I can get my tires filled for free.

 

Technically Yes. The 1st Costco I went to told me I had to buy them there, so I went to another one and the did it. The 1st time you do it, the need to put it on the lift and let out all the compressed air, and refill with N2. After that you can just pull up to the outside of the bay to get topped off.

Never been asked if I bought them there after that, and that's in 4 states, CA,AZ,NM and TX

 

Nitrogen, like any other gas, IS affected by temperature. All gases must follow the ideal gas law and deviations from it. Please stop spreading misinformation

 

Your right it is but no where near the extent of air.

Prior to my nitrogen, my TPMS would be on every morning in the winter and off in the afternoon. Now in the winter, because of the minimal if any decrease in pressure, my TPMS does not come on.

I have close to 40k miles on my tires and they are 3 years old. They are evenly worn, no rot, cracks, cups or otherwise. I expect they are good for another 10k miles. I have never had tires last this long.

We can debate and search this all day long, but what it comes down to is rear world experience. Mine is very good and I recommend it. TIFWIW

 

The difference in air and nitrogen is essentially nil. It is the moisture that causes the greatest fluctuations in pressure. An air compressor with a simple water trap installed inline will get you the same results. Most good shops will already have one installed. Nitrogen is a gimmick, and is not worth it if it isn't free.

 

Speaking from experience or sideline racing?

I gave am giving a real world experience based on my own observations. I do agree though, you shouldnt pay for it, you should get it at Costco

 

I use nitrogen, because I get it at costco. I still top off with regular air, because it is more convenient and it makes no difference. I am a chemical engineer, i KNOW the difference in minimal.

 

If you mixed in air into tires that have been previously filled with nitrogen, what kind of an effect would if have on the tires?

I wouldn't attribute it to just having nitrogen in your tires. There are other factors that play a role in even tire wear/life of tires (i.e. frequent tire rotation, proper alignment, quality of tires, proper inflation pressures, treadwear rating of the tires, driving habits, properly working suspension componets.) Just out of curiosity what kind of tires are on your car?