Nitrogen in tires?

[ahfann]

Has anyone tried this? They claim that it could increase gas mileage, and that the psi will not vary with temp change. Will this work with the pressure sensors on the SS? What, if any, are your benefits if you do this?

[wmolzon]

i was also wondering about this, my friends parents have a sonata and they did this and its suppose t be great. as far as the benefits i have only heard about the pressure not changing which in effect would help with gas MPG

[DucatiSS]

Welcome to the site. Once you have 10 posts you will be able to search for a subject like this. Until then try this http://forums.trailvoy.com/showthread.php?t=13348&highlight=nitrogen.
It just might give you the answer you are looking for.

[josh1029]

Around here in Nascar-land it is really popular. I got a buddy that runs a tire shop and he sets it up for people all the time.

That article mentioned above has some good info. My concern is if you do need to adjust pressure, off to the shop you go ... right now all I do is grab the hose off the compressor in the garage.

[400plus]

I recently became aware of nitrogens use in tires. From what I was told, it will eliminate loss of psi but if you tend to drive over 115mph it wasn't recommended (not sure why, maybe someone else has that answer?). I heard nothing about better gas mileage though.

[APDMC6008]

In the USAF we used it in the aircraft tires. More stable, doesn't expand nearly as much due to heat, less risk of blowout. Imagine the heat generated by a 450,000 C-17A Globemaster on an assault landing, stopping in less than a half mile. The brake temps used to be in the upper 200's....Celsius.

[Blazernut]

it will eliminate loss of psi but if you tend to drive over 115mph it wasn't recommended (not sure why, maybe someone else has that answer?). I heard nothing about better gas mileage though.

Better not tell that to the Air Force and the Navy pilots! :x

On the contrary it is much more stable and does not support combustion. The part I like about it is the fact that because the molecules are larger they do not disapate as quickly through the membrane of the tire so I don't have make my lazy a$$ check or top up my tire pressures as often. :D

[TrailblazerSS]

The part I like about it is the fact that because the molecules are larger they do not disapate as quickly through the membrane of the tire so I don't have make my lazy a$$ check or top up my tire pressures as often.

That statement is is comparable to stating that if one person pee's in the ocean the level of the ocean must rise. :duh:

Air is 78.5% Nitrogen, 21% Oxygen with with the balance being argon, water vapor, carbon dioxide methane and various other gasses. N2 and O2 are linear not circular molecules. As a quick comparison, we can use the covalent radius defined as 1/2 the distance between to identical covalently bonding nuclei. This is measured in picometers (1 pm= 1x 10-12 m). Nitrogen's covalent radius is 73pm so the length of a nitrogen molecule ought to be about 4 X 73pm or 292 pm. A molecule of oxygen ought to be just a shade larger 4 X 75pm or 300pm. So an oxygen molecule ought to be about 2.7% larger than a nitrogen molecule. All the other minute gasees are larger than Nitrogen. The average size of a molecule in Air is greater than the average size of a molecule of Nitrogen. The leakage rate for pure Nitrogen should not be less than air based on pure permeability.

The ONLY science to the thing is the water vapor content and its affect on pressure with temperature change. Even that is so minute, maybe 0.5 PSI for 50 F temp change, as not to matter to every day driving. In extreme racing applications it can matter. With airplanes it is a combustion support/fire issue.

Save your money for something that really matters, you still need to check the pressure just as often.

[Blazernut]

That statement is is comparable to stating that if one person pee's in the ocean the level of the ocean must rise. :duh:

Air is 78.5% Nitrogen, 21% Oxygen with with the balance being argon, water vapor, carbon dioxide methane and various other gasses. N2 and O2 are linear not circular molecules. As a quick comparison, we can use the covalent radius defined as 1/2 the distance between to identical covalently bonding nuclei. This is measured in picometers (1 pm= 1x 10-12 m). Nitrogen's covalent radius is 73pm so the length of a nitrogen molecule ought to be about 4 X 73pm or 292 pm. A molecule of oxygen ought to be just a shade larger 4 X 75pm or 300pm. So an oxygen molecule ought to be about 2.7% larger than a nitrogen molecule. All the other minute gasees are larger than Nitrogen. The average size of a molecule in Air is greater than the average size of a molecule of Nitrogen. The leakage rate for pure Nitrogen should not be less than air based on pure permeability.

The ONLY science to the thing is the water vapor content and its affect on pressure with temperature change. Even that is so minute, maybe 0.5 PSI for 50 F temp change, as not to matter to every day driving. In extreme racing applications it can matter. With airplanes it is a combustion support/fire issue.

Save your money for something that really matters, you still need to check the pressure just as often.

Maybe the guy was feeding me a line :undecided the science does not support his argument but the nitrogen was free.

In your opinion would it be an advantage for people that may push their vehicles over 100 mph for extended highway trips? (there was a guy in the middle east that drives this on a daily basis)

[edjunior]

That statement is is comparable to stating that if one person pee's in the ocean the level of the ocean must rise. :duh:

Air is 78.5% Nitrogen, 21% Oxygen with with the balance being argon, water vapor, carbon dioxide methane and various other gasses. N2 and O2 are linear not circular molecules. As a quick comparison, we can use the covalent radius defined as 1/2 the distance between to identical covalently bonding nuclei. This is measured in picometers (1 pm= 1x 10-12 m). Nitrogen's covalent radius is 73pm so the length of a nitrogen molecule ought to be about 4 X 73pm or 292 pm. A molecule of oxygen ought to be just a shade larger 4 X 75pm or 300pm. So an oxygen molecule ought to be about 2.7% larger than a nitrogen molecule. All the other minute gasees are larger than Nitrogen. The average size of a molecule in Air is greater than the average size of a molecule of Nitrogen. The leakage rate for pure Nitrogen should not be less than air based on pure permeability.

The ONLY science to the thing is the water vapor content and its affect on pressure with temperature change. Even that is so minute, maybe 0.5 PSI for 50 F temp change, as not to matter to every day driving. In extreme racing applications it can matter. With airplanes it is a combustion support/fire issue.

Save your money for something that really matters, you still need to check the pressure just as often.


Dem man, way to go. Spoil all our fun with actual science!! What a spoilsport!

[doug633]

Additionally, my TBSS came with its own air compresser and hose right in the back. It even has a tire pressure gauge! Might as well use it...

[juventus1983]

It may not a huge difference either way, but it would more likely make a difference in long term apps. If its available then use it. Also if you get yours nitro filled you can always add reg air from a compressor, it wont hurt anything.

[Nukedog]

All aircraft use it. It varies less in pressure with regrds to outside air temerature...

[TrailblazerSS]

All aircraft use it. It varies less in pressure with regrds to outside air temerature...and aircraft tires experience much higher temperature extremes during operation. It makes no significant difference for the temperature range a car tire experiences.

If it's offered for free that's one thing (of course the cost is likely buried in the purchase price of the tires etc.) But paying for it is a waste of money.

[GoodysEnvoy03]

The rim/tire combo I just purchased are filled with nitrogen. I feel that the first time up to speed, the ride is bumpy. But when you hit 65 for the first time and then everytime after that the ride is smooth. I don't know if it is the balance but I figured the bumpiness would stay all the time if that was the case. :woot:

[AJSZR2326]

every knowledgeable person knows its a scam :) why dont they jsut fill them with helium to make them lighter,duh ,if ur willimg to spend the extra money on nitrogen please forward checks to me first, thx
as pt barnum said: theres a sucker born every minute.

[Wut_is_pewter]

i also heard that the nitrogen molecules are larger so that it is less likely to seep, plus the non expanding/contracting air pressure makes it so you have to cheack them faaaaar less often

i have no proof just what i hear

[06voy]

My envoy came with nitrogen in the tires, but I dont think its worth it. Last time i checked them they were all low and im not going to drive all the way to the dealer to have them inflate them. Didnt notice any better milage with it. Its supposed to make your tires last longer because there is no water from the air in them. But I think its a scam. My 2 cents

[zambinc]

Maybe the guy was feeding me a line :undecided the science does not support his argument but the nitrogen was free.

In your opinion would it be an advantage for people that may push their vehicles over 100 mph for extended highway trips? (there was a guy in the middle east that drives this on a daily basis)

NASCAR runs Nitro to keep the h20 vapor from boiling and blowing out the tires. You're not going to be hitting 195mph or you'll be changing out sets of tires about every 75 miles. That's because the rubber wears off at those sppeds.

So, you won't see any benefit to going nitrogen. Cops will stop ya long before your tires will!

Vengeance Tune, HSRK, K&N Aircharger, Kbee coilovers, Hotchkiss RSB, lowered 3.5" 2.5", Brake Coolers, Front/Rear Air Defs.

[Nukedog]

and aircraft tires experience much higher temperature extremes during operation. It makes no significant difference for the temperature range a car tire experiences.

If it's offered for free that's one thing (of course the cost is likely buried in the purchase price of the tires etc.) But paying for it is a waste of money.

I never said it was worth money or not - simply stating the facts on what i have known for being around them for 20 years. Word comprehension is your friend...:duh:

[TrailblazerSS]

I never said it was worth money or not - simply stating the facts on what i have known for being around them for 20 years. Word comprehension is your friend...:duh:

Your typo ridden statement implied something that resulted in the fallacy of false association. My first statement pointed why that was a fallacy.

My second paragraphically separated statement was my own. And by way of the separation specifically did not imply you said anything about value.

Lexical sematics is YOUR friend...:chillpill:

[2K7J-TBZR]

.. Touché ..
:laugh:

[Warwagon]

Maybe the guy was feeding me a line :undecided the science does not support his argument but the nitrogen was free.

In your opinion would it be an advantage for people that may push their vehicles over 100 mph for extended highway trips? (there was a guy in the middle east that drives this on a daily basis)

It is in the owner's manual that you should increase the rear tire pressure to 38 PSI for Extended High Speed Operation over 99 MPH page 5-66.

The short tire life of 1 year 15K miles does not make nitrogen fill worth it.