Nitrogen filled tires from factory?

[DogHauler]

Nitrogen tire fill works best with the Tornado intake fuel saver.

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[sgraing1]

Tell the dealer you want the Nitrogen removed, associated charges deleted and "regular" air installed in your tires. Stupidest thing ever! Actually ask for Helium, it will improve your MPG!

But helium hurts your traction.

 

[mbagne]

Ideal gas law: P*V = n*R*T, the gas constant in this case is universal, the number of moles of gas is constant if you don't leak or add, and the volume is pretty constant. Air, nitrogen, whatever will change pressure the exact same way with temperature.

Nitrogen is usually dry, the compressed air usually isn't, so the moisture issue is somewhat real, but about 25 to 30% of the gas in the tire is likely to be air regardless, as there is no good way to get air out before pressurizing the tire. You could fill and purge several times to reduce this.

The only time air will change more with temp will be when it has a lot of water in it, and the temperature is low enough to condense it out and freeze it. However, the amount of water vapor in the tire will be normally a very small part of the total amount of gas, so this won't make much difference.

Nitrogen doesn't leak slower than air, it is 4/5 of air, and pretty much the lightest major component. If any difference, it would leak faster. It might slow tire rot from the inside a bit, but that is rarely why you need new tires. There is no significant benefit to normal people for nitrogen filled tires. It won't hurt, but it is not value added, really.

Here is an article from Tire Rack that says nitrogen does leak out slower than regular air. https://www.tirerack.com/tires/tiretech/techpage.jsp?techid=191

 

[BrentC]

Make sure your dealer installed winter nitrogen as the summer nitrogen doesn’t work well this time of year.

 

[Doc Rocket]

Here is an article from Tire Rack that says nitrogen does leak out slower than regular air. https://www.tirerack.com/tires/tiretech/techpage.jsp?techid=191

I would like to see a reference to someone who actually proved that. The nitrogen may not react with the rubber, but diffusing through the rubber is largely a function of size, and the oxygen molecule is larger than the nitrogen (and the carbon dioxide is larger yet, and bent, it does not diffuse well through any solid). Tire Rack is a sales organization, so I kind of doubt their technical pronouncements.

 

[Phil]

Well, Earth air is 78% nitrogen, so technically all tires from the factory are at least 78%.

came here to type this but it already exist

 

[mbagne]

I would like to see a reference to someone who actually proved that. The nitrogen may not react with the rubber, but diffusing through the rubber is largely a function of size, and the oxygen molecule is larger than the nitrogen (and the carbon dioxide is larger yet, and bent, it does not diffuse well through any solid). Tire Rack is a sales organization, so I kind of doubt their technical pronouncements.

I tend to agree with you, and it would indeed be interesting to see how the claim is backed up with a more detailed, scientific or technical overview.

 

[U725Bronco]

my Bronco came with the same sticker and I think Nitrogen labeled valve stem caps....I peeled off the sticker day 1, but haven't done anything with air pressure

 

[SPITmadFIRE]

Remember oxygen has water in it....

remind me what the chemical compound is for water?

 

[Bradnewt]

my Bronco came with the same sticker and I think Nitrogen labeled valve stem caps....I peeled off the sticker day 1, but haven't done anything with air pressure

My Bronco has valve stem caps that have a Nitrogen label too. Dealer did not charge me for putting Nitrogen in my tires, so maybe Ford used Nitrogen in the tires.

 

[Chris Tyacke]

Has anyone else with a Sas package received their rig with nitrogen from the factory?

Nitrogen is a race car tire creation to alleviate tire pressure fluctuations from tire temperature. A complete waste of money. Another money maker for dealerships.

 

[Orf]

Here is an article from Tire Rack that says nitrogen does leak out slower than regular air. https://www.tirerack.com/tires/tiretech/techpage.jsp?techid=191

Best line in the article:

Rather than pay extra for nitrogen, most drivers would be better off buying an accurate tire pressure gauge and checking and adjusting their tire pressures regularly

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