Nitrogen Filled Tires
 

Is anybody running Nitrogen in their tires? If so do you think its made a difference or worth it? I took the FRS in for a tire rotation and man were they pushing me to fill all the tires with nitrogen. It was expensive so said no for now but i left curious about the benefits. I got shown all these charts and stuff and they made me feel like putting regular air in my tires is a no no on this car. I call BS on that.

I think they busted this on Fifth Gear. It's no better than regular air...

I run nitrogen in my tires. I like it because once I get my pressure set I don't have to keep playing with it as tires heat up on the track.
I carry a bottle of Nitrogen in my trailer if I need to ever top them off.
I would never go back to air for track tires myself. But see no benifit for street only tires.

I had nitro fill on my Genesis tires. It was great because they never lost pressure with temperature changes. No reason to do it with the BRZ since I swap tires for winter.

I had a set of tires filled with nitrogen a few years ago on an old car. The tires went at least 2 years without needing pressure adjustment. Nitrogen is drier than most air fill, in addition to being a mostly larger and more uniform molecule. Moisture in the air really affects how the pressure responds to changes in temperature. When needed, you can top off the nitrogen filled tire with normal air, as the small amount will not affect it that much, as long as the air is reasonably dry at the time. I also really like nitrogen fill for tires that see track use, as they seem to keep more consistent pressure as the tires heat up.

What price were they asking you to pay for nitrogen fill? I just had a new set of snow tires mounted and had them filled with nitrogen for $5 per tire. I felt that it was worth it based on my past experience.

When you get new tires at Costco , they fill them with nitrogen at no additional charge. I did not notice any difference.

I'll sell you my very own special blend of Tire Air.
It is 78% nitrogen, 21% oxygen, and a special blend of trace gases.

It's cheap and I will ship it to you in canisters.

I see what you did there

do you offer blinker fluid as well?

We use nitrogen in all the aircraft in the navy, and we check and adjust pressure daily. The advantage comes from the lack of moisture.
http://www.tirerack.com/tires/tirete...jsp?techid=191

The ONLY advantage to using dry nitrogen in aircraft instead of dry air is that the N2 is non combustible which is important in aircraft, not cars.
And as for the "my pressure changes less due to temperature changes with the Nitrogen":
Bullshit! Last time I checked PV-nRT applies to all gases which means that the Pressure change due to temperature is the same for Nitrogen as it is for "Air" especially since '"Air" is already 80% Nitrogen.

The ONLY difference it makes is that less moisture can translate to more consistent pressure to temperature variation.
That is because the presence of a phase change material (water) in the tire can make the pressure vs temp profile non-linear and NOT follow the ideal gas law.

So if you use an air dryer on your compressor, you will see no difference between dry air and Nitrogen.

But hey .... It's your money.

They were doing that because of this:

If it's free, whatever floats the boat. But 5/wheel???

My winters were put into storage last year - I just put them on the car 3 days ago. Exactly the same PSI as when I put them away (34). From my compressor. It's snake oil for a street car.

Got my tires filled with nitrogen after the Georgia winter and fluctuating temperatures had me going to the air fill up almost every two days. My Subaru dealership offered it to me for free and I haven't seen my tpms light go off since. It was worth it for me especially since it was free.

Don't the cars come stock with nitrogen-filled tires, or is it just based on the dealership?

My tires have the green cap on them which I thought indicates that the tires are filled with, and only should be filled with nitrogen - I've had my car for over a year now, and I've never had to refill them outside of when the dealership checks them during my oil changes.