i work at a car dealership and we are starting to but N2 in peoples tires for $4.95 a tire. i tried it only cause i get it for free and i cant tell the difference. they clam you get better gas mileage and better handleing. just wondering what you guys think about it. i think it is a joke. lol.
i would guess it has more to do with the temperature and air pressure rather than performance. im not a scientist, but i bet nitrogen doesnt expand or contract due to weather changes like oxygen does. could be wrong though, im just taking a guess.
you are right n2 doesnt expand and it keeps pressure better for longer
No it should expand and contract due to it being a gas, but i think it would take a drastic change to do so. But that sounds like b.s. Why spend roughly $5 a tire, when you can put air in it for free. Plus isnt N2 flamable?
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idk with our economy so bad why would someone but something that cost into there car when they can but something in it for free. lol it is in a rich area people piss their money away
the notrogen molicules are larger than air , and big enough they dont seap out of the tires like air does
which mean you out 32psi in , and it stays in
and its expaning and contracting rate is not as drastic as air is , if i remember correctly
I seen this on tv on a car show once, they said that tires filled with air at higher speeds can change up to 10psi, where nitrogen only changes 2-3psi. Probably a good idea in summer when it get really hot
yeah it was free so i am glad i did it. i guess nascar does it and so do airplanes
Yup. Commercial plane's tires are filled with nitrogen, at least from what I saw when I worked at the airport. I know planes do it because of the pressure difference at high altitudes, and to keep tire temps down when landing.
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Also lighter I believe. If that makes much of a difference.
Uhh.... isn't regular air something like 80% nitrogen anyway?
u put C02 that keeps ur tires colder and more traction
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Lenko, John Lenko wrote:Uhh.... isn't regular air something like 80% nitrogen anyway?
Exactly. $5 per tire for changing the nitrogen content from 80% to 100%. Big deal. To each his own, I guess.
I play paintball pretty regularly and my teammates and I all use nitrogen for our markers because it maintains a consistent pressure compaired to other alternatives. The pressures don't fluctuate due to temperature changes. And as far as air having a high nitrogen content, that's true, but there's a difference between compressed air and pure compressed nitrogen. And as far as using CO2 to keep your tires colder for more traction, that's ridiculous. Cold tires have less traction, and CO2's properties cause the pressure to fluctuate pretty severely when it gets hot. And a rapid pressure release causes dry ice to form, so if you have a blowout, you now have dry ice in your tire. This is clearly not a good idea.
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i use N2 in my paintball gun. co2 is a bad idea. i have been driving with n2 in my tires for about a week now and i cant tell any difference. they use a N2 gauge to test the amount of n2 in the tire mine are at 96%
helium atoms are very small. you'd lose pressure very quickly.
nitrogen is not flammable...and helium.......trying to make the car fly
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lol at this thread.
They have been doing this to sport bikes and classic cars for some time now.
By having 100% nitrogen your tires with not change pressure with added heat from high speeds, or hard cornering. This give you a more even wear on your tires treads, and better handling if you do auto-cross or something like that.
Another benefit with having nitrogen in your tires is longer life of the tire.
Nitrogen is less harmful to the tire that air is, and helps prevent stiffness of tires that sit for long periods of time. like classic cars and such.
Oh my god,
Doesn't anyone ever have to learn basic chemistry anymore?
Air is truly 80% nitrogen.
All gases expand with heat.
Tires are causing the heat, not the gas inside. SInce the gas inside is trapped, it will be the same temperature as the tires given enough time.
Nitrogen is used by racing teams and aircraft because of its source.
Typical "air" is compressed from open air with a shop compressor. This compressed gas contains a large amount of moisture.
Nitrogen is a processed gas. As a part of the processing, all the moisture is removed.
The moisture content is what causes the greatest amount pressure changes do to changes in heat.
Filling average street tires that are used on the street does nothing to improve mileage or handling. It is a simple marketing scan to make money.
I have watch the automakers spend thousands of dollars to gain a quarter MPG, if it improved anything, they would already be using it.
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Midnight Ride wrote:No it should expand and contract due to it being a gas, but i think it would take a drastic change to do so. But that sounds like b.s. Why spend roughly $5 a tire, when you can put air in it for free. Plus isnt N2 flamable?
uhh yeah...it'll sure explode, watch out when u strike a match or something in normal air seeing as how the atmosphere is like ~80% nitrogen
and seeing that, why would u fill it up with pure nitrogen...like seriously, the atmosphere is mostly nitrogen so why add another 20% to ur tires for 5 bucks lol...doesnt make sence to me
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I think what JT was getting at was that Nitrogen doesn't expand and contract AS MUCH as compressed air. I play for a paintball team and I use nitrogen for that very reason. When gases are compressed they heat up quickly and when they are released they cool very quickly. Nitrogen's temperatures and psi doesn't have as broad of a fluctuation compared to other gases. It's more stable. It's also inert, so it causes no damage like oxidation or anything like that. But nitrogen molecules are also smaller than oxygen molecules: N2 molecules are 1.09 Angstrom, O2 molecules are 1.21 Angstrom. Chemistry was about the only class I paid attention in.
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Nitrogen is inert now? Since when?
Why dosn't anyone listen to protomec?
Air = 80% Nitrogen, which means no discernable effects from the extra %20. It's not flamible, it's not going to have significantly larger or smaller molecules (rubber can be air tight anyway it's the seal that leaks), it's not inert, all you get is the slightly smaller rate of expansion due to the lack of moisture.
Guess what though, tire specifications given by the manufaturer assumes that the average consumer puts AIR in their tires and that it will expand a certain ammount, that's why you have a COLD pressure reading. The HOT pressure should be different, so if you were to put a gas in your tires that dosn't change you wouldn't get the HOT tire pressure you should be. Which means your tires are then UNDERINFLATED, which means blowouts. I love me some physics.
Now if you really wanted to do something wierd, someone should try helium. You know, "weigh savings."
