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Nitrogen in tires

This is a discussion on Nitrogen in tires within the GTO forums, part of the Vehicle Specific category; We use Nitrogen to service all our air in the aircraft industry, mainly becuase its "DRY" and prevents corrosion. You ...

  1. #21
    Member Spieldawg's Avatar
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    We use Nitrogen to service all our air in the aircraft industry, mainly becuase its "DRY" and prevents corrosion. You would see no difference at all in the amount of nitrogen placed in a 17, 18 or a 19 x 8 inch tire.

    Its a scam, when I bought my wheels, they wanted to charge me 30 bucks to fill my tires with nitrogen.

  2. #22
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    on my 80 t/a, i got a new set of BFG radials at costco and they filled my tires with nitrogen for free, never had to refill them once since, still at 35 psi

  3. #23
    rednari
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    Quote Originally Posted by PatrizioD View Post
    Sounds like a good idea, Red. Some Paintball supply stores have it too... I used to fill up my M4 Paintball Marker (gun) with it. What I'd like to know is, what is the weight difference between a tire with nitrogen and a tire with air (at the same pressure, obviously). Anyone have any info on this?
    I do not have the actual weight difference for a given tire, but I do know that air is 79% nitrogen, 20% oxygen, and 1% other gases. On the table of atomic weights, nitrogen is 14 and oxygen 16, so oxygen is slightly heavier. It probably does not add upto more than an ounce or two for the average tire fill.

    But that is not the true purpose for nitrogen. The oxygen in air attracks water from the atmosphere and compressing equipment. When racing at high and sustained speeds, the water turns to steam and affects handling and could cause a blow out, as mentioned above. It also prevents rim rusting as pointed out by Spieldawg for aircraft rims, which do not operate at sustained high speeds where steaming is a factor.

  4. #24
    Member jujofields's Avatar
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    I've thought about switching to nitrogen in my tires for a while now...

    There ARE benefits to switching over to nitrogen, as people have previously stated...cost & availability seem to be the only disadvantages. However, it seems more auto places/dealerships/tire stores/repair shops are carrying nitrogen....I know of numerous places that carry it in only a couple-mile radius from my house.

    Actually, though I've been thinking about putting nitrogen in the tires on my car for some time, I've been even more so thinking about putting it in the tires NOT on my car. I have some rims in storage that have new tires on them and I've thought it'd be good to put nitrogen in those...one reason being that the nitrogen will help prevent the insides of the rims from corrosion...

  5. #25
    Member Spieldawg's Avatar
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    Quote Originally Posted by rednari View Post
    I do not have the actual weight difference for a given tire, but I do know that air is 79% nitrogen, 20% oxygen, and 1% other gases. On the table of atomic weights, nitrogen is 14 and oxygen 16, so oxygen is slightly heavier. It probably does not add upto more than an ounce or two for the average tire fill.

    But that is not the true purpose for nitrogen. The oxygen in air attracks water from the atmosphere and compressing equipment. When racing at high and sustained speeds, the water turns to steam and affects handling and could cause a blow out, as mentioned above. It also prevents rim rusting as pointed out by Spieldawg for aircraft rims, which do not operate at sustained high speeds where steaming is a factor.
    Well we use it in strut servicing too.. its truely Dry. as far as heat, aircraft tires will get hotter than any automotive tire due to excessive brake heat... etc.. Tire pressures can raise as much as 30-40 PSI on tires that have just taxi'd.

    The main point of this is, you will see minimal if no gains in anything using nitrogen over air.

  6. #26
    rednari
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    So you are saying even though aircraft tires get hot after taxi, the steam created, if air filled for instance, is not a factor because the plane is not required to race through turns at 200 for several hundred miles.

  7. #27
    Member Spieldawg's Avatar
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    I have never heard that before ever. I never heard of tires exlpoding due to excessive amounts of steam..

  8. #28
    Veteran 0rion's Avatar
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    Here's a few quick links to read..... pretty much just supports what's being said here though.

    http://auto.howstuffworks.com/question594.htm

    another one

  9. #29
    Member Spieldawg's Avatar
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    Primarily the reason we use it in aircraft is to prevent corrosion on the inside of the pistons, in the precharged accumulators, and actuators.. that are air precharged.

    For the average joe, driving a GTO.. unless he is running an endurance race at redline for 8 hour around a road coarse, where the tire pressure is critical, this would have very minimal impact period. Save your money and buy some other mods down the road.
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  10. #30
    Grand Imperial Wizard Sarge's Avatar
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    Quote Originally Posted by shady milkman View Post
    i'm confused air is made up of 78-79% nitrogen already..i see no real big benefit from switching to nitrogen
    Mainly getting the water out of your tires Shady....

  11. #31
    Grand Imperial Wizard Sarge's Avatar
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    I still dont understand why some places do it for free as a service to their customers and some people here are being charged for it. It is all free here...that is why I said what the hell....

  12. #32
    Senior Member TransAm11973's Avatar
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    if i could find it for free around around here I would say sure what the hell, but I dont think I would pay for it

  13. #33
    I f@#ked the prom queen RoadWrath04's Avatar
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    ive got a friend who restores late '60s to early '70s muscle-cars...he swears by nitrogen in the tires, and his reasons are 1) better wear on the tires over their lifespan and 2) they can sit for longer periods of time without use and have less "ill effects" from neglect...he's got probably 7 or 8 cars now...i have no idea if they are true effects, or if they might just be in his head...but then again, he's one of the few around here that seems to have his shit together with his autos...

  14. #34
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    update

    ok, so my dealership is looking at getting the nitrogen setup for tire inflation, and i got curious, so i volunteered to help with the selection...turns out, getting a tank of nitrogen and hookin it up through a line for your tire inflation isn't gonna get you all the benefits...mostly because the special nitrogen machines they use have multiple filters, because air lines will allow moisture and oxygen to seep into the hose itself, so you still get all of the nasty stuff if you don't have filtration on the line to clean out impurities...you need 93% pure nitrogen for the max benefits of the fill...not sure how to do that without the machine...just in case you were curious...oh, and the machines are close to $5K on the low end...

  15. #35
    Grand Imperial Wizard Sarge's Avatar
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    I just got a used oxygen tank/regulator and had it filled with 300lbs all for the one time cost of $85 bucks.

  16. #36
    Moderator Cutlass's Avatar
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    I apologize for resurrecting this old thread, but our dealership just bought one of these $8000 nitrogen filling machines and so I'm trying out nitrogen in my WS6. I actually thought I was experiencing the same thing Sarge did with the smoother ride, but wasn't sure if I was fooling myself.
    I've heard a few stories through coworkers and friends about nitrogen filled tires. One guy said his 1st set of (air filled) tires on his Volvo lasted 30k, 2nd set (same exact tire, nitrogen filled) has lasted 70k. I find that hard to believe but....IDK??
    Another guy said he didn't have to add air to his tires for 12 to 13 months...hmmm??
    Sounds neat.
    I ran a test on my car. Air filled tires increased in pressure about 3 to 3.5 psi on my ride home from work. Nitrogen filled (and on a warmer day) increased in pressure 1.5 to 2 PSI. So there was a difference there, although I expected(was hoping) the nitro pressure to stay within 1 psi, but whatever...

  17. #37
    Grand Imperial Wizard Sarge's Avatar
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    Yeah it is different than air. So it will return different results in ride/maintenance refilling time lines/tire wear etc.

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