Air or Nitrogen in your tires

Discussion in 'POLLing place' started by aloxdaddy99, Dec 26, 2011.


Air or Nitorgen

  1. Air

    37 vote(s)
  2. Nitrogen

    16 vote(s)
  1. aloxdaddy99

    aloxdaddy99 New Member

    I know N2 is being used in tires in many different areas. Some of those are in airplane tires, NASCAR tires and other forms of racing. It is claimed that N2 filled tires are more stable because of the size of the molecules of N2 and all. I just feel as though it is a relatively new thing to use them in personal vehicles. I have stopped into a few tire shops to inquire about how/where they get the N2 from. The comman response is "from the green compressor". So they are pushing something they know little to nothing about. I have seen where tires filled with N2 have rotted out. Now granted this was on military equipment that saw little to no road time. So did they rot out becasue of the use of N2 or just old age? Till I am able to answer that question I will continue to put the good ol american fresh air in my tires.
    Last edited: Dec 26, 2011
  2. SurrealOne

    SurrealOne Former Member

    Using: Air
    Reason(s): Availability; air is readily available everywhere, even on holidays and out in the middle of nowhere while on the trail. Nitro fill seems like snake oil to me, so I'll stick to the snake oil that I know works and that I know I can get rather than changing brands.
  3. tbplus10

    tbplus10 Moderator

    I'm using nitrogen right now, because both my truck and the wifes car came with nitrogen in them.
    Would I pay extra for Nitrogen? No.
    One of my various jobs in the Navy was as a Cryogenics technician, I ran a separating plant on a carrier for 2 yrs, in the middle of a Desert for 6mos, and in Ga. for another 2 yrs. I went to 4 different schools to qualify as a Cryogenic technician learning the make-up of different gasses and liquid Cryogenic compounds, so I know the benefits of Nitrogen vs Air.
    In Military road equipment it's normally used not because of its stable qualitys but because of it's commonality, nitrogen is used to create explosion free enviroments, to purge systems of contaminates and moisture, on Aircraft tires and systems, and since you already have the nitrogen and it works well in tires its used there too.
    Nitrogen has larger molecules that cant escape as easy as air, which is why they leak down less, it carries less moisture, its more stable to temperatures, extreme hot or cold, which is why its used in aircraft tires, and Nitrogen over Hydraulic systems or pressurized systems.
    But when your running anything less than 99.9% pure it doesnt have these qualities and it's just regular old air with a bit more nitrogen content. One other problem with nitrogen is when it's not at least 87% pure it allows more moisture in whatever vessel it's in, the container will sweat on the inside. Once this starts happening the container needs to be purged and the purity level brought back up or you'll start suffering from erratic pressures almost worse than with regular old air.
    My wifes car at present is suffering from this issue, the GM dealer will purge her tires at $20 a tire and replace the nitrogen. Now knowing what I do about nitrogen I know that to purge a vessel it requires a "Hot Purge" the nitrogen must be at least at a constant 85 deg or better, so since the Chevy dealer admitted they dont even know what "Hot Purging" is, and they dont have the proper equipment to do it, all their really going to do is swap my diluted nitrogen for some slightly more pure, not get rid of the contaminates in the tire that are causing the purity breakdown or the moisture in the tire.
    1 person likes this.
  4. aloxdaddy99

    aloxdaddy99 New Member

    I was also a cryo tech while in the Marines. I work in an Air Seperation plant now. I was chatting with another member of the forum and this topic came up.
  5. tbplus10

    tbplus10 Moderator

    Did you go to school at Cherry Point, Havenot NC?
  6. aloxdaddy99

    aloxdaddy99 New Member

    Yes I did from 94-95.
  7. Jimmeh

    Jimmeh New Member

    I voted air. Like Surrealone said, it's everywhere so that's why I use it.

    I've been hearing about nitrogen in the tires for at least 5 years now. Didn't think it was really that "new". I've seen a few cars with the green caps running around here, but I've never heard of any of the tire stores filling your tires up with nitrogen.
  8. jnbama

    jnbama Member

    Dealer was nice enough to fill tires with $40 nitrogen before parking it on the lot. I guess it helps with the daily and weekly temp. change here but I always kept a check on my tires anyway, the next set will be filled with air
  9. tbplus10

    tbplus10 Moderator

    Then we crossed paths without even knowing it, I went to a basics refresher course and Advanced Expeditionary school out there in late 94 prior to deployment.
  10. aloxdaddy99

    aloxdaddy99 New Member

    They always said that it was a small community.
  11. dadngt

    dadngt New Member

    I used n2 when I got the new tires & wheels mounted cost an extra $20 for the set. Was susposed to help improve mpg, keep tire pressure full durring cold months. But really I have actually seen a decline in my mpg from 18-19 to 15-16. Had the n2 since March 2011 first thing changed on the truck then flowmaster exhaust, & the mpgs are slipping down instead of improving. Maybe a different problem but I'm thinking about cutting my losses & going back to air.
  12. Enkeiavalanche

    Enkeiavalanche Moderator

    I have to say very nice read. But as most will do I will stick with FREE air..I know that I can change it or add some in 1 min from anywhere I am.

    By the way Can you use N2 in Air horns?
  13. tbplus10

    tbplus10 Moderator

    You could but it wouldnt make any difference in the operation of the air horn and you'd have to pay to get your tank charged.
    Low riders that compete in hopping contest's will sometimes use nitrogen instead of air because they can get their tanks filled with pressurized Nitrogen upto 3500PSI, you normally wont find compressed air above 120PSI.
  14. grape2

    grape2 New Member

    With the tire pressure monitors, Chrysler had us to put nitrogen in tires so the silly little light would not come on. After about two years, they seemed to drop that requirement. We could still use it but not required. About an even split from the customers, some claimed improvement, some just complained. Like the others I use air.
  15. Red Z71 Max

    Red Z71 Max New Member

    Im using N2 because that is what was in the tiresfrom the dealer. I will say that tires have kept a constant and stable pressure for almost a whole year. I have heard rumors of tires running at cooler temps while running in hot weather =ing longer tire life. I don't have any proof to back up this info. Just something I had seen on a couple of the Corvette forums!
  16. Coach24

    Coach24 New Member

    Yup me too. And Nitrogen takes all the moisture out of the tire so if you are stranded in the desert and need to suck some moist air , yup regular air for me. It has worked for many a years:neutral:
  17. tbplus10

    tbplus10 Moderator

    I bought new tires for the wifes HHR Monday and the counter guy was trying to sell me on Nitrogen at $10 a tire.
    He went into the whole spiel about the benefits, as he was wrapping it up I started hitting him with technical questions about Nitrogen and if he would do a hot purge.
    He looked at me and asked do you work for a company that sells gasses?
    I said no I was a cryogenic plant operator a few years back and had to go to school to learn about cryogenics and gasses.
    Then he said you probably just want regular old air dont you?
    Last edited: Jan 11, 2012
  18. Coach24

    Coach24 New Member

    I love it hen they try to BS their way into an add on sale
  19. Jeremy09LTZCrew

    Jeremy09LTZCrew New Member

    Air is available. So really it's less a choice.


    They same their are advantages to runnign nitrogen. But like everything there are down falls like availability. Dealer had it in there when I bought it so for now that's what I'm running.

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