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  1. #1
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    What psi do you run?

    Yes, I'm a newb. What is a good recommended psi for on and off road use?

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    Legend hills's Avatar
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    30-40 psi for me

  3. #3
    sarcasm meter: jerk mode santiago's Avatar
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    140psi
    First Class Jerk

  4. #4
    Wood Licker Maelstrom's Avatar
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    Depends on the situation, but I commonly run 25 to 30 up front and 40 in the back

  5. #5
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    Quote Originally Posted by Maelstrom
    Depends on the situation, but I commonly run 25 to 30 up front and 40 in the back
    Carefull with that low psi...you could be replacing a lot of rims if you ride rough trails

    usually something around 45 works best

  6. #6
    Custom User never's Avatar
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    Quote Originally Posted by jm01
    Carefull with that low psi...you could be replacing a lot of rims if you ride rough trails
    Are you telling Maelstrom to be careful with his pressure in the front...if so...HAHAHA!


    Quote Originally Posted by jm01
    usually something around 45 works best
    Maybe for your trails/you/bike setup. The optimal pressure will depend on a lot of things...your bike setup, tire size, trails, your weight, riding style, etc...

  7. #7
    Flatland hack Flak's Avatar
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    I usually go a little high because i hate pinch flats and soft punctures. So around 37 or so.

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    Quote Originally Posted by never
    Are you telling Maelstrom to be careful with his pressure in the front...if so...HAHAHA!




    Maybe for your trails/you/bike setup. The optimal pressure will depend on a lot of things...your bike setup, tire size, trails, your weight, riding style, etc...
    not really...take a hit at 25 on your front and you will crease your rim...I've adjusted by running a 2.1 on the front for "float" and a 1.95 rear fro "drive" on one of my bikes

    And yes...tire pressure depends on a lot of things, but unless you want to work harder getting a soft tire to roll on the trails, more pressure is better than less. At 25 you will sacrifice speed and safety with that softer sidewall

  9. #9
    That's how I roll..
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    Quote Originally Posted by jm01
    not really...take a hit at 25 on your front and you will crease your rim...I've adjusted by running a 2.1 on the front for "float" and a 1.95 rear fro "drive" on one of my bikes

    And yes...tire pressure depends on a lot of things, but unless you want to work harder getting a soft tire to roll on the trails, more pressure is better than less. At 25 you will sacrifice speed and safety with that softer sidewall
    You're making a lot of assumptions here. You have no idea what kind of riding he does, so why are you suggesting what his tire pressure should be.

    The same goes for the OP, optimum tire pressure depends on the rider, bike and terrain.

  10. #10
    In search of moar cowbell dminor's Avatar
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    Quote Originally Posted by jm01
    Carefull with that low psi...you could be replacing a lot of rims if you ride rough trails

    usually something around 45 works best
    Not with fat tires and DH tubes. I run 25-28 front and rear and haven't pinch-flatted in a year.

  11. #11
    Custom User never's Avatar
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    Quote Originally Posted by jm01
    not really...take a hit at 25 on your front and you will crease your rim...I've adjusted by running a 2.1 on the front for "float" and a 1.95 rear fro "drive" on one of my bikes

    And yes...tire pressure depends on a lot of things, but unless you want to work harder getting a soft tire to roll on the trails, more pressure is better than less. At 25 you will sacrifice speed and safety with that softer sidewall
    You're assuming everyone rides cross country on smoother trails.

    With one of my bikes, if I ran 45 psi up front I would be sacrificing speed and safety.

  12. #12
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    Quote Originally Posted by never
    You're assuming everyone rides cross country on smoother trails.

    With one of my bikes, if I ran 45 psi up front I would be sacrificing speed and safety.
    maybe, my home trails are hardpacked forest...mostly sand, hence the 2.1 @45 front

    However, i do ride the trails on Blue Mountan, our local 800' "hill...mostly limestone, clay, with rock gardens and roots

    here I use a bike with 1.95 Nevegals on Mavic 717's, but also @ 45 psi...I find that a stiffer sidewall works best in the rocks. My wife rides DH DDY rims with Kenda Megas at about 40...those wide tires offer more cushion, but I can only fit up to 2.3 in the fork and chain stays on this bike

    I guess this is what makes life interesting

  13. #13
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    So I'd be good running about 40 front and back until I get a feel for the trails?

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    Quote Originally Posted by MattS07
    So I'd be good running about 40 front and back until I get a feel for the trails?
    40 works well

  15. #15
    PBR Racing RIC0's Avatar
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    I"m strictly a XC rider on singletrack. I run tubes with Slime. PSI front and rear is 37 for all conditions.

  16. #16
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    Quote Originally Posted by Pete Fagerlin
    For on road use the tire is hard when I pinch it between my thumb and index finger.

    For off-road use the tire is squishy when I pinch it between my thumb and index finger.
    Actually thats pretty much what I do. I haven't actually checked the exact pressure of any of my bike tires in a long time.

    On the mountain bike my front is a little squishier than the rear.

  17. #17
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    As much as possible to lower rolling resistance but still keep traction. You will need to experiment to find the "sweet spot".

    Tire pressure is one of the biggest factors that will affect the way your bike handles and rides.
    [SIGPIC]http://i134.photobucket.com/albums/q82/probable556/BF_Sig_Small2Custom.jpg[/SIGPIC]

  18. #18
    Wood Licker Maelstrom's Avatar
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    Thanks for the advice JM01, I will take that into account next time I am pumping up my tires for whistler mountain (little taller and rougher than blue)...

    Let me clarify...since "ranges" make people upset

    Xc - 35 up front and 45 rear. I like a soft front for those nice rainy days when a square tire gets better traction on roots and rock faces than a round pointy 50psi. If I was riding the shore, I drop the psi a little more, head north to Kamloops, I increase by 5 to 10 psi. Different terrain, different weather, different needs. Most of the time, I am a set and forget, 30psi up front suits everything for me.

    Dh - 25 to 30psi depending on the tire I am using, 40 in the rear max, usually closer to 35. On the muddy days I usually drop the pressure a little more. I know there are two lines of thinking on that. Narrow and high pressure cuts the mud, wide and low pressure sits on top. Since I weight enough to make any tire "cut" through mud, I figure I need any traction advantage I can take.

    In all those setups, I have never pinch flatted. I am a very large rider with the skill of a ryno running through the woods. If I don't pinch flat I am either lucky or I am doing something right.

  19. #19
    Wood Licker Maelstrom's Avatar
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    Quote Originally Posted by jm01
    not really...take a hit at 25 on your front and you will crease your rim...I've adjusted by running a 2.1 on the front for "float" and a 1.95 rear fro "drive" on one of my bikes

    And yes...tire pressure depends on a lot of things, but unless you want to work harder getting a soft tire to roll on the trails, more pressure is better than less. At 25 you will sacrifice speed and safety with that softer sidewall
    Likely the difference, I don't/can't ride tires that small. My "xc" tire is 2.3. 1.95 is for my commuter tires.

  20. #20
    Wood Licker Maelstrom's Avatar
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    Quote Originally Posted by santiago
    140psi
    4*35?

  21. #21
    one less horse cryptid01's Avatar
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    Quote Originally Posted by Maelstrom
    I am a very large rider with the skill of a ryno running through the woods.
    LOL! A nimble rhino maybe.

  22. #22
    Wood Licker Maelstrom's Avatar
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    Quote Originally Posted by gastro
    LOL! A nimble rhino maybe.
    You didn't see me in my tootoo did ya?...

  23. #23
    one less horse cryptid01's Avatar
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    No but thanks for the visual <fiercely gouges minds eye with coathanger>

  24. #24
    In search of moar cowbell dminor's Avatar
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    Ouch! Ouch! Turn it off! Turn it offffffffff!!!!

  25. #25
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    27 to 29 front and 2 lbs more in the rear.

    Al

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