has anybody ever used nitrogen in their stock advans? I was thinking about doing this there is a shop out by my house that does it cheap. supposedly they are lighter and will make your tires last longer also I live in the desert so the temp drops from like 100 to 40 every day and nnight so the tire pressure changes each time any recommend psi for out here? thanks in advance for your input.

 

Save your money!!!

By volume, air is about:

78.084% Nitrogen (N2)
20.947% Oxygen (O2)
0.934% Argon (Ar)
0.033% Carbon Dioxide (CO2)

 

It actually is a good idea. I have held tire pressure a lot better with the Nitro, but this was done at Costco so no extra charge.

 

jay leno swears by it. http://www.popularmechanics.com/auto...o/1302951.html (last paragraph, page 2). the rest of his articles are pretty cool too.

 

I was gonna get it done for $6 all four tires so it's not a big deal at all theatt's like a combo meal at mickyd's

 

I think its a great idea for racing...I think it keeps the temps down on your tires right?

 

The pressure doesn't change (as much) like it does with normal air... a lot of it has to do with the moisture in the air you put into your tires. As the tire gets warmer, the pressure will increase, sometimes dramatically. As it gets cooler, it will lower.

Ask any Auto-X'er, how much tire pressures vary from run to run. You can start at 36psi and after 2 runs be at 46psi.

It won't keep the tire cooler.

 

Partially correct ... its harder for nitrogen to expand when heated .. so it keeps your tire pressures consistant for hot and cold ...

 

ah thanks for the clarification

Those rims that have two valve stems are perfect I hear for putting nitrogen in.

 

Over on the Speedtv boards under the F1 discussion they had concluded that nitrogen does nothing that dry air can't. They also claimed that F1 teams did not use nitrogen in their tires.
But I was talking to my son who is an airline mechanic and he tells me that the FAA specs nitrogen in airplane/jet tires for exactly the reasons that everyone else has said. It does not expand during the heating and cooling cycles that a jet goes through. Also it does not lose pressure as regular air seems to.

 

this is incorrect. one guy said it right already. when you simply use air, there is a high(er) percentage of water vapor. this water vapor can condense or vaporize depending on how hot the temps are in the tire. this will cause relatively large swings in the tire pressure as the water vapor % increases/decreases.


when you fill your tire with nitrogen, the pure nitrogen has no water vapor in it coming out of the tank, so all you have as far as water vapor is what was originally in the tire when you started filling it. with significantly less water vapor in the tire, the tire pressures don't change nearly as much with temperature changes.

as stated before, air already has 70 some odd percent of nitrogen in the air, so it is not the difference between air and nitrogen making the pressures change.

 

Here's the link if you are interested for that speedtv nitrogen discussion. Speedtv

 

All gases expand at the same rate due to heat. So it is definitely the liquids ( h2o) in the air that causes presure to go up and down so quickly.

 

to run a nitrogen setup effectively, you need to have two valve stem. you need to bleed the air inside the tire while you fill it up with nitrogen.

 

even water vapor expands and contracts and the same rate as other gases, its the fact that the water vapor will actually condense into water as the temp goes down that causes the large pressure drops.
Also the reason the FIAA spec's nitro for its airplane tires is because they go through far greater temp drops then any car tire will.