I have heard of a lot of people who put nitrogen in tires instead of air. Has anyone done this on the Z? And if so could you tell any differences from air? They claim more MPG, less pressure loss, and cooler running temps with nitrogen.

 

i had this and really did not notice much of a differance other than i had no leakage at all over a 4mth period that the nitrogen was in the tires.

 

Nitrogen doesn't change pressure based on temps like Air does, you may not have lost any air when you were using it, just had a colder day or had not driven the car much just before you checked pressure.

 

The difference is almost insignificant , its about a 1% difference. Nitrogen also is thinner and will bleed off faster.

 

we fill nitrogen at our dealer...

you can set your air pressure and it will stay there rather then climb up 15-20 psi on a track day!

any other claims of effecting milage etc... well, i dunno, i just want my air pressure to stay what i put it at!

my old wheels were designed to get all nitrogen in and all the air out...

you really need 2 valve stems to get all the air out...

Sorry I dont have any without this old watermark.. .haha

 

Can you explain how nitrogen is "thinner"? Hint, Air is ~70% nitrogen already

 

NASCAR racers cover the entire underside of the vehicle to reduce drag. You could do that plus nitrogen.

 

Nitrogen content is closer to 80 percent. Reference: http://www.airproducts.com/Products/...en/default.htm. But more important is the reduced water vapor content of nitrogen vs air.

 

You're right, it was late last night and I couldn't remember if oxygen was 21% or 29%. So its ~80% of air, with the rest constituting oxygen and water. My real question is what is the relative size of N2 vs. O2, and would increasing the content of N2 make the gas "thinner" or "thicker"?

 

I am not sure which atom is larger. Nitrogen or oxygen?

 

nitrogen is affected less by temperature changes...i'd do it

 

I heard it's about $10-$20 a tire to fill?

I think it's only worth the expense if you race.

 

Besides the constant pressure, with nitrogen you don't have to worry about condensation in your wheels which can cause rust, etc. on chrome or other plated wheels.

 

we charge $39.95 regularly here...

I can see if I can work something for the forum if there is interest...

 

for everyday street driving there is no real advantage of nitrogen in the tires in place of air besides less leakage. It is simply a way for retailers to set themself apart from other retails in hopes of generating more tire business. Nitrogen in the tires is more appropriate for race applications. Don't let retailers tell you it's the way of the future and that it's so much better. For one thing, it's not as easy to find if you ever need to air up.

 

"Tire Barn" will do it for free if you get the tires from them.......

 

not worth it

 

Thanks for the input guys,

 

the only reason i use nitrogen is because its free at the dealership where as they charge other people for the service...

 

Thats why jets have it in their tires.....
Will it help performance? Doubt it.