Pressure Questions?

Discussion in 'Observed Trials Discussion' started by bwagner, Jul 10, 2004.

  1. bwagner

    bwagner New Member

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    Ok what pressure do most of you run in your stock bike tires? I'm kinda heavy, but I'm interested in what others runs in their rear wheel mainly. Just as a point of reference. Thanks to any and all who participate in this .
     
  2. Elan

    Elan steve french

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    remember, rim/tire choice makes a huge difference. i run a try-all with a maxxis minion 2.5 at 16 psi always
     

  3. evan

    evan Guest

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    I just picked up a Maxxis Minion and I've been running it at 25 psi, seems to work well. I'm on an Echo rim and I weigh 165 lbs.
     
  4. AgrAde

    AgrAde From your head to your fists

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    echo rim/2.5 minion ST on rear - 10 to 20psi depending on what i'm doing. 10 when on natural that doesn't constantly threaten pinches, 15 normally and 20 for urban/going fast (well, as fast as i can on my pure)

    on front i have some thin light xc bs and that stays around 15psi

    i am 160lb

    i like to be rimming on most bounces :hsugh:
     
    Last edited: Jul 11, 2004
  5. RyanMcVicker

    RyanMcVicker Well-Known Member

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    Wouldn't tube size make a difference too?
     
  6. Elan

    Elan steve french

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    yea..but not that much really.. especially if you use a little bit of talc powder.
     
  7. seattletrials

    seattletrials New Member

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    wow you guys run really low pressure. I usually run 25 up front and 25 in the back with an intense 2.35 and dh tube. i don't hit rim all that often mostly because i don't want to dent them.
     
  8. RomanR

    RomanR DualDisc 26"

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    As Elan said, what rim you run makes a difference on how low you can go before you start getting tire rollling issues. I have a Mavic 521 rear rim, and a big huge Specialized Roller RS tire, which didn't fit my frame until I spent some minutes with a wire cutter. I'm at 23-25 psi now, any lower and my tire will fold underneath me if I load it sideways. I already have to be real careful riding slanted natural. I'll make sure to get a smaller tire next time, and a wide rim when I feel like changing this one.

    Front I have 18-ish psi, but I'll put a bit more in if I'm riding some sharp edged natural, or trying some taps on sharp corners. I have a very light Specialized front tire, so again I have to be careful when I'm riding sharp stuff.

    If you have good tires with good casing and sidewalls, you can go low on the psi, without worrying about flatting and folding. A wide rim helps an immense amount, especially on the rear, other wise you'll have the same tire rolling problems I have if i drop the psi too much. The same benefits from a wide rim can also be present in front rims, where a wider rim will let you use lower psi.
     
  9. Zyzzyx

    Zyzzyx Guest

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    Front: 18; Maxxis HighRoller 2.35" single ply, Alex DM-24 (?)

    Rear: 13-16, natural-urban; Michelin 24.1 2.5", Alex DX-32

    Me: ~165 pound sport rider


    I'll frequently hit the rim on the front, especially on natural. The rear starts feeling a bit too squirmy for me at any lower pressures, but usually only hit rim on the bigger gaps/drops. Maybe one pinchflat ever 3-4 months, usually from being stupid.
     
  10. jimmyboy

    jimmyboy Guest

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    when i rode stock....i ran 30 psi.....yes i know thats high......any lower my dad would yell at me saying i was gonna destroy my expensive parts.......hes old and wont listen to me.....o well....what can ya do?
     
  11. atypical

    atypical Guest

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    2.7"Mobster and ~35psi. No shit, it gets me by- anything less feels like I'm pedaling a rickshaw. So what if I don't get an up, or drops feel harsh- it happens, at least I'm not 5 miles from home and walking back.
     
  12. jimmyboy

    jimmyboy Guest

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    you got a point there.
     
  13. felix

    felix New Member

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    175 lb
    Schwalbe Al Mighty 2.35" (weighs about 1,4kg (3.1 lb))
    Alex DX 32
    any cheap tube
    23psi

    with a Michelin c24 2.2" I used to ride with 26psi
     
  14. Ryden

    Ryden Guest

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    I run 35 psi, then let it run down gradually until it gets within pinchflat range. Then I just put it back up. Im to crappy to really be affected by somthing like that anyway. Plus its good to have a change in conditions once in awhile, keeps you on your toes.
     
  15. xxxfr

    xxxfr RCP FABRICATION

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    im like 190lbs and i have dx32's front and rear. Hot s 2.5 on the front, 20psi geax 6 ply on the rear 18psi. I only ride urban.
     
  16. uownme

    uownme get high and eat her

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    dx32 rear michelin 24.1 2.2 and I run about 16-20psi
     
  17. oicdn

    oicdn Guest

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    I'm like Ryden in terms of how my PSI is fill it up, then let it get low, then fill it back up....mines kinda a ghetto method though.

    I fill it up till it feels soft, then I go ride over a curb, and if the rim hits the curb put in more air until it doesn't. this way it's soft, but not flat feeling. And you can really tell (atleast I can) how smooth your being as sometimes your rim will hit the ledge, and other times it won't....
     
  18. Jackhammer

    Jackhammer New Member

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    Rear DM-24

    Kinetics 2.35

    35 psi minimum......even with that it still folds upping curbs

    Front Rhynolite XL

    Kinetics 2.1

    Same PSI...anything lower, and the slightest bit of weight collapses the tire right to the rim...i have many flatspots to show for this....yeah i need new tires
     
  19. Gurra

    Gurra Porna Veselo Zadorno

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    Remember one simple thing before u ride! ITS ALL ABOUT THE PSI!
     
  20. Elan

    Elan steve french

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    scandinavia is a weired place