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  1. #1
    bland
    Reputation: m77ranger's Avatar
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    New question here. Tire help. (fast response plz)

    My instagram told me it was cold and i want to have the right setup for the new AZ cold we got (global warming my b*tt.) I know that you should fill your petrol tank when its cold because cold gas is more dense than hot gas and you get more bang for your bux. I know that air is gas so its more dense in my tires right now. Is there some equation for how much more air I need to put in my tires?

    I'm running a 2.5 minion up front and a two four ardent in back both tubeless STANS

    Make it quick nerds I'm going for a ride as soon as my hydration bladder thaws out.

  2. #2
    mtbr member
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    Quote Originally Posted by m77ranger View Post
    My instagram told me it was cold and i want to have the right setup for the new AZ cold we got (global warming my b*tt.) I know that you should fill your petrol tank when its cold because cold gas is more dense than hot gas and you get more bang for your bux. I know that air is gas so its more dense in my tires right now. Is there some equation for how much more air I need to put in my tires?

    I'm running a 2.5 minion up front and a two four ardent in back both tubeless STANS

    Make it quick nerds I'm going for a ride as soon as my hydration bladder thaws out.
    ROUND!!!!!!

    (Sorry, I didn't read your post, but saw you wanted a fast response. Good luck with your search.)
    Nobody gives a s#$t you singlespeed.

  3. #3
    SamuraiBunnyGuy
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    a full gas tank leaves less room for condensation to form on the tank walls which ultimately ends up as water being injected into your engine

  4. #4
    I Tried Them ALL... Moderator
    Reputation: Zachariah's Avatar
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    28/front - 24/rear....go ride!
    "The mind will quit....well before the body does"

  5. #5
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    Make sure you make the switch from summer air to winter air. I won't make THAT mistake again...
    “Think of bicycles as rideable art that can just about save the world.”
-Grant Petersen

  6. #6
    bland
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    Quote Originally Posted by Zachariah View Post
    28/front - 24/rear....go ride!
    I should have made it clear, I ride a 26er. I don't fall for trick marketing.

  7. #7
    How much further ???
    Reputation: Douger-1's Avatar
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    I dont get it ....
    “Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did." Mark Twain

  8. #8
    Nouveau Retrogrouch SuperModerator
    Reputation: shiggy's Avatar
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    Tire help. (fast response plz)

    Quote Originally Posted by m77ranger View Post
    I should have made it clear, I ride a 26er. I don't fall for trick marketing.
    Then use 26psi f&r, desert and winter specific air.
    mtbtires.com
    The trouble with common sense is it is no longer common

  9. #9
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    You should run the same psi whether its cold or warm, I think what you are referring to is that as the temperture drops, so does your pressure (for the same amount of air).... I think the natural drop is something like 1psi per 10 degrees F.

    Goodyear Corporate | Newsroom | News Releases | As Temperature Drops, So Does Tire Inflation
    fat old man ... fueled by Mexican pastries....

  10. #10
    SCRUBDUNKER
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    Just put 40 in both and let your suspension smooth the ride out.

  11. #11
    mtbr member
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    more importantly, you should ensure that you have the proper air for your tire. If it was made in Taiwan, you need a Taiwan floor pump. Contrary to popular belief, Italian pumps cannot make Taiwanese air. For that matter, Italians are pretty much known not to work period.
    Find a ride on FB> AZ MTB

    "Uppercase with a space"

  12. #12
    bland
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    Thanks for the help. I didn't really understand a most of it so I'll just go to the shop and do what ever they say.

  13. #13
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    pV=nRT

  14. #14
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    do nothing.

    less expansion at colder temps will give you more traction in the snow/ice, plus the rubber is less compliant in the cold so it should flex less.

    pulled this out of my ass 2 seconds ago

  15. #15
    Nouveau Retrogrouch SuperModerator
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    Tire help. (fast response plz)

    Quote Originally Posted by metalaficionado View Post
    do nothing.

    less expansion at colder temps will give you more traction in the snow/ice, plus the rubber is less compliant in the cold so it should flex less.

    pulled this out of my ass 2 seconds ago
    Smart ass.
    mtbtires.com
    The trouble with common sense is it is no longer common

  16. #16
    Si vales, valeo.
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    If it's all the same to you, then I must recommend NOT (I repeat, DO NOT do this!) putting the Clearance Summer Air in your tires, as I once did this, and when I was riding I got a ticket from the park ranger saying that it was a fire hazard. He let me off easy by only taking my bike, gear and all the money in my wallet, but he said next time he would even kick me in the jimmy!! Consider yourself warned!!

    But on a more serious note, if it were me, I would just do it, because you never know when they might tell you otherwise, and that would be terrible! Remember??
    "An inconvenience is an adventure wrongly considered." G.K. Chesterton

  17. #17
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    Quote Originally Posted by MtbAZ44 View Post
    You should run the same psi whether its cold or warm, I think what you are referring to is that as the temperture drops, so does your pressure (for the same amount of air).... I think the natural drop is something like 1psi per 10 degrees F.

    Goodyear Corporate | Newsroom | News Releases | As Temperature Drops, So Does Tire Inflation
    *Sigh*
    There's one in every group. İ

  18. #18
    mtbr member
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    Quote Originally Posted by GR1822 View Post
    *Sigh*
    There's one in every group. İ
    I have a feeling this thread is a farse.. and I am the idiot for not knowing that...
    fat old man ... fueled by Mexican pastries....

  19. #19
    mtbr member
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    Yeah, LBS air is the best. That online stuff could be a blem and not have a warranty. Besides, is that online store gonna help when some of your precious air escapes?
    Quote Originally Posted by m77ranger View Post
    Thanks for the help. I didn't really understand a most of it so I'll just go to the shop and do what ever they say.
    Find a ride on FB> AZ MTB

    "Uppercase with a space"

  20. #20
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    On a similar note, does anyone else have this issue. You flat, put in a tube, fill it with a Co2. Next day, flat. Fill with air compressor, fine??? Happens VERY frequently on my road bike.
    Drinkin the S-Works Kool-aid

  21. #21
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    You guys still use air and CO2? I've switched to methane long ago. If you have a leak, you'll know.

  22. #22
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    Quote Originally Posted by az3075 View Post
    You guys still use air and CO2? I've switched to methane long ago. If you have a leak, you'll know.
    I fill with it hydrogen, with the buoyancy your tires float over the rocks and I can bunny hop downed trees.

  23. #23
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    A mix of 78% Nitrogen and 21% Oxygen works best in the winter. I can get it free through work, too.

  24. #24
    Si vales, valeo.
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    Re: Tire help. (fast response plz)

    Quote Originally Posted by AZ Stumpy View Post
    A mix of 78% Nitrogen and 21% Oxygen works best in the winter.
    Depends on the humidity...

    Sent from my HTC One using Tapatalk
    "An inconvenience is an adventure wrongly considered." G.K. Chesterton

  25. #25
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    Quote Originally Posted by AZ Stumpy View Post
    A mix of 78% Nitrogen and 21% Oxygen works best in the winter. I can get it free through work, too.
    10% of particulate if you live in Phoenix, good for plugging smaller leaks.

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