Tires Pressure?

Discussion in 'Bicycle Repair' started by geebt48cc, Jan 1, 2013.

  1. geebt48cc

    geebt48cc Member

    Guys, do you think it's better to run max pressure in tires on motorized bike? Or, wonder if you should keep the PSI right around 55?

    TY..........................(Uno, I can go up to 73psi?)

  2. TobiasKilroy

    TobiasKilroy Member

    I can only answer from personal experience.
    I am a fat guy and I have found that my rear tire will walk backwards on my rim with anything less than the max pressure,65psi.

    If you are a skinny guy and don't ride your bike hard like i do, then i can't imagine it would matter.
  3. butre

    butre Well-Known Member

    I prefer higher pressure for less rolling resistance, but I air down for comfort and traction if I'm going offroad
  4. The_Aleman

    The_Aleman Active Member

    I like 55-60psi in my tires rated for 65psi maximum. Every bike tire I've ever had, I run max pressure minus about 10% when cold.

    I ride paved roads, so YMMV.
  5. TobiasKilroy

    TobiasKilroy Member

    I've never had a problem with overheating/over pressuring. I have never blown the bead off of a rim that it fit, and I've run sketchy tires & and antiquated equipment.
  6. KCvale

    KCvale Motorized Bicycle Vendor

    ~50# works for me on most tires, but I'll take comfort over speed.
    The more air you have the less the road resistance but the harder the ride, kind of like solid tires, not a smooth ride without shocks.
  7. TobiasKilroy

    TobiasKilroy Member

    A sprung saddle is what I do to smooth out the road. I run as high a pressure as my tires allow because of my weight.
  8. SeanPatrick

    SeanPatrick Member

    Your MAX is more a suggestion. If you have modern clincher rims and a wire bead there is no reason you can't fill them to 100psi. The 700x18 I have on my road racing Giant TCR Zero has Michelin Dynamic sports at 120psi. on my MB I am using Specialized Nimbus Flak Jackets (26x1.5) at 80psi. Low pressure makes the sidewall roll more and causes extra wear. It also causes more heat and friction and can have negative effect on handling. I've only had one tire fail from high pressure and it was the sidewall of a continental ultra sport. That was from age tho, I got it second hand and didn't look it over very well.
  9. TobiasKilroy

    TobiasKilroy Member