tyre pressure

scaz424
scaz424 Posts: 5
edited September 2013 in MTB general
what sort of tyre pressure should you have on forest trails

Comments

  • Chunkers1980
    Chunkers1980 Posts: 8,035
    Depends on your weight, style and tyre, But between 20-40.
  • ej2320
    ej2320 Posts: 1,543
    Chunkers1980 wrote:
    Depends on your weight, style and tyre, But between 20-40.

    +1

    Look at the max and min values on the tyre

    If it's hard packed with rocks and not too many bumps and ruts I'd go high

    If it's muddy, and rough I'd go lower

    Generally I run 30 - 45 psi
  • No Sweat
    No Sweat Posts: 103
    Take a look at this site - it's as good a starting point as any......

    http://mtb.ubiqyou.com/
  • scaz424
    scaz424 Posts: 5
    cheers for reply the link was sound
  • Downhill_Deamon
    Downhill_Deamon Posts: 24
    that helped me as well :)
  • Butterd2
    Butterd2 Posts: 937
    Not sure about the link, suggested my pressures at 33/35 when I run 22/24.
    Scott CR-1 (FCN 4)
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    My collection of Cols
  • Growmac
    Growmac Posts: 117
    Not sure absolute pressures are much use. My track pump gives figures 40% higher than a friend's. It's useful for replicating pressures that I like, but nothing more. I suspect most gauges are similarly inaccurate.
    1994 Clark Kent F12; 2004 Mount Vision; 2011 Canyon AM 7, 2012 Canyon Torque FRX 6, a unicycle and a Brompton.
  • brucie45
    brucie45 Posts: 279
    I generally run 40psi for trail use, works for me on hard paked trails, drop to about 30 if its muddy and wet.
    Commencal Ramones Cromo 13 - viewtopic.php?f=10017&t=12926938
  • homers_double
    homers_double Posts: 8,274
    Never seen that link but its pretty helpfull. I've been running mine about 4-6psi below so for once, I'm taking note of a website!
    Advocate of disc brakes.
  • pilch
    pilch Posts: 1,136
    Couldn't tell you exactly what I run, I just tend to pump a load of air in, dig my thumb in the tyre till it feels about right then ride, sometimes I put a bit more in or let a bit out, depending on the terrain and the tyres i've got on
    A berm? were you expecting one?

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  • beancapooer
    beancapooer Posts: 16
    yep tends to vary.

    rocky/rutty about 40
    muddy?wet about 30

    thats very roughly thou as allday at dry day at stiniog was probably closer to 50
  • stubs
    stubs Posts: 5,001
    Also depends what size tyre you have bigger volume means you can go lower without risking your rims.
    Fig rolls: proof that god loves cyclists and that she wants us to do another lap
  • coulddobetter
    coulddobetter Posts: 812
    Depends what day of the week it is .
  • mc_hawkings24
    mc_hawkings24 Posts: 51
    Great link I had mine pumped up to 60 psi so just abit hard. I did the calcs and should be in the 30's.
    Feels much better now and not jarring my hands.
  • JayKay3000
    JayKay3000 Posts: 163
    30psi for offroad. Forest trails sounds like hardpack with no obstacles so 40 might be fine.
  • Chunkers1980
    Chunkers1980 Posts: 8,035
    Why would you want to get a pinch flat to tell you?

    IME they are caused by mistakes, where you mis-judge a jump or an unweight and slam the rear or hit a corner/edge.

    In any case the OP might be running tubeless, he doesn't mention, we are assuming.
  • YeehaaMcgee
    YeehaaMcgee Posts: 5,740
    pilch wrote:
    Couldn't tell you exactly what I run, I just tend to pump a load of air in, dig my thumb in the tyre till it feels about right then ride, sometimes I put a bit more in or let a bit out, depending on the terrain and the tyres i've got on
    ^^This.
    Don't overthink things.
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