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Nitrogen for tires?

Discussion in 'Model S: Driving Dynamics' started by RainmakerJL, Nov 4, 2013.

  1. RainmakerJL

    RainmakerJL Member

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    Lot of talk about inflatingtires with nitrogen. Is it worth it or should i just get a decent inflator for home and keep tires properly inflated?
     
  2. jerry33

    jerry33 S85 - VIN:P05130 - 3/2/13

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    Nitrogen inflation for on-road vehicles is basically a scam. On a vehicle in normal use it won't buy you anything. There are situations where nitrogen inflation helps:

    1. In underground mines, subways, and high altitude airplanes nitrogen is used because if there is a fire the nitrogen in the tires won't add any oxygen to the mix. Above ground and at road altitudes, there is already plenty of oxygen and the amount extra in tires won't make a difference.

    2. High end racers use nitrogen inflation because it's guaranteed to be dry so they can tweak the suspension to reduce the lap times by that last 1/100th of a second.

    3. Low end racers use nitrogen inflation because the smaller tracks often don't have electricity in the pits and nitrogen is as cheap and safe as anything.

    Other than that the best thing you can say about nitrogen is that it won't hurt the tires any because air is already mostly nitrogen. Just get a compressor and an in-line dryer (which will also keep any air tools you have in good condition).
     
  3. RDoc

    RDoc S85D

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    What jerry33 said - it's mainly a scam.
     
  4. Plug Me In

    Plug Me In Member

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    I use a 78% nitrogen mix in my tires. Works great.
     
  5. widodh

    widodh Model S R231 EU

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    I think my Model S came with nitro in the tires by default? There is a green cap on the tires which indicates nitro, correct?
     
  6. Crispix

    Crispix Member

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    When bad guys force you to drive off a pier into the ocean, how will you breathe from your tires if they don't contain regular air? Nitrogen in the tires is a recipe for disaster.
     
  7. liuping

    liuping Active Member

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    That's my preferred blend as well. :)

    (For anyone who may not know, regular air is 78% nitrogen)
     
  8. ecarfan

    ecarfan Well-Known Member

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    Heh heh heh. Interestingly (or maybe not) in scuba diving, a green band on a tank indicates a NITROX mixture which contains less N and more O2 thN "normal" air. .

    Like everyone else I always fill my tires with 78% Nitrogen.

    We are way off topic now...
     
  9. Doug_G

    Doug_G Lead Moderator

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    Waste of time and money.
     
  10. N4HHE

    N4HHE Member

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    I only use Mobile-1 Synthetice Aire™ in my tires. :smile:
     
  11. Chipper

    Chipper Active Member

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    Remember just a couple of decades ago how the thought of bottling water seemed like an idiotic idea??? Maybe you and I should look into going into the "Synthetice Aire" canning business?????
     
  12. RainmakerJL

    RainmakerJL Member

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    And you will become a zillionaire.... - The Lorax
     
  13. hiroshiy

    hiroshiy Active Member

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    Believe it or not, Bridgestone says Nitrogen is recommended because Nitro is more likely to keep the tire inflation...
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    Their data is 195/65R15, 60 degrees celcius for 100 days, after that air tire went from 240kpa to 140kpa, whereas Nitro tire went from 240kpa to 180kpa.
    I'm not sure this test is relevant or not though. :)
     
  14. K5ING

    K5ING MegaMiler

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    Using nitrogen is useless. Use helium instead. It will make your car lighter and increase your range. :tongue:
     
  15. jerry33

    jerry33 S85 - VIN:P05130 - 3/2/13

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    It's not. If you haven't checked your tire pressure in 100 days, you have a bigger problem than what to put in them. Both tires were 25% or more underinflated (assuming 240 kPa was the correct pressure).
     
  16. Chipper

    Chipper Active Member

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    Too bad it cannot use methane. My wife says I could provide a constant supply. (I wonder what she could have been talking about????)
     
  17. RainmakerJL

    RainmakerJL Member

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    Can anyone suggest a reasonably priced in line dryer?
     
  18. jerry33

    jerry33 S85 - VIN:P05130 - 3/2/13

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    There are several on Amazon, such as this one.
     
  19. liuping

    liuping Active Member

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    This is one the big downsides to using nitrogen in tires. You cannot easily just top off at home, so you are less likely to keep them at optimal inflation.
     
  20. montgom626

    montgom626 Active Member

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    you get 79% Nitrogen already. Do not waste your money.
     

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