I don't have nitrogen filled tires and i wouldn't want it either. Air is already 80% nitrogen. I don't have the resources either to top up nitrogen filled tires. so personally, i'd rather stick to air because it's more convenient when refilling and the benefits of nitrogen filled tires don't outweigh the inconvenience.

I hope you didn't pay any extra for the nitrogen.

 

My Wife and I have a 2010 CRV LX and the tired are filled with Nitrogen, I am not sure if they told you why they fill them with nitrogen.

With air when it is extreme temperature changes in the seasons then air pressure goes up and down which will cause irregular wear on tires and just not as great gas mileage. Nitrogen stays steady in extreme temperature changes for even wear and even mileage

If for whatever reason you need to top up your tires you can add air, just next time you are in to get service let them know and they will drain your tire and fill it up with nitrogen, it should be a free service.

hope this helps!!!

 

At Costco they use Nitrogen and more and more places are using it; keeps the pressure longer and is lighter than air.

 

Many places now put in Nitrogen when u buy new tires. When u have to top it off, it is ok to just top it off with regular air.

http://www.popularmechanics.com/cars/how-to/repair-questions/4302788

http://blogs.consumerreports.org/cars/2007/10/tires-nitrogen-.html

http://www.thetruthaboutcars.com/2007/10/the-truth-about-filling-your-tires-with-nitrogen/

 

i have this in all of our cars back in our country, P.I. its cheap and easy to
source out there..
ive used this in several of our "toy" cars, and what was said its true, the tire
pressure didnt change that much in the course of the full day track event...

 

I didn't pay extra for the nitrogen. I guess it was a gimmy.......

There is a outfit called Nitro-fill that has almost 2000 dealers across the country to support filling tires with nitrogen. My Honda dealer is one of them.

When I put new tires on my other Honda, last summer, I bought them at Costco and they put nitrogen in the new tires at no cost.

 

Its what we use on aircraft tires because it is totally inhert. 150+psi in gigantic tires that go from still to 200+mph really freaking fast when the jet lands makes it a good safety precaution.

Not sure why you'd want it in a car tho...

 

Nitrogen speculaton.



Oxygen causes oxidation, rust and corrosion, and is a major factor in rubber deterioration. Displacing it with Nitrogen reduces these actions.

And for some shear speculation, I wonder if the industry has replaced a bunch of TPMS sensors because they were corroded and figured that filling with nitrogen was cheaper than all those sensors?

And, although nitrogen pressure changes somewhat less than air with temperature, it does still change with seasons. And they do seem to change less with the heat from driving.

Cheers.

 

It's not so much the oxygen, than the moisture in ambient air.

Air is ~80% nitrogen to begin with. Most nitrogen fills that purify out of air only gets to ~95% nitrogen. And unless whoever does the filling does a minimum of 3 purge-fill cycles, they won't be up to the 95% nitrogen level.

Gasses follow the ideal gas law, whether it's oxygen or nitrogen or helium or whatever. They all expand or contract the same amount with changes of temperature. i.e. the coefficient of expansion with temperature is constant for all gasses. So less variations in pressure over temperature swings is bogus.

However, if you have moisture, as the temperature drops, or you compress the air in the tires and the moisture condenses, you have a more significant drop in pressure.

Here's the math- 18 grams of water takes up 22.4 L when it's a gas... when it condenses, it takes up 18 mL. That's over 1200 times volume contraction. So if you have 3% moisture in the air at 30 psi, if it condenses, it'll drop close to 1 psi immediately. And it's that moisture combined with oxygen that contributes to corrosion.

But then corrosion isn't that much to worry about- the outside of your tire is subjected to way harsher conditions than the inside will ever be.

The final thing, then, is that oxygen is smaller, and leaks faster than nitrogen. By how much? about 4 times faster... So purer nitrogen in tires do leak "slower".

But then, as the oxygen leaks and you put in more air, you're essentially upgrading the amount of nitrogen within the tires.

So if you can get nitrogen inflation for free, go for it. If you have to pay for it, know that it's generally only 95% nitrogen. The more important thing is that you get DRY air or DRY nitrogen.

 

Of course, it's the moisture.



So tires with air and nitrogen with the same amount of moisture will react to changing temperatures the same? However, won't a tire with dry nitrogen react different than one with moist air?

Sure wish Honda would tell us why they go to the trouble and expense of this seemingly useless process?