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PSI question

Discussion in 'Bicycle Mechanics and Repairs' started by Tom87, 9 May 2008.

  1. Tom87

    Tom87 New Member

    Location:
    Darlington
    I blew up the front tyre of my bike last night to find that it had blown this morning.

    The recommended PSI was 116 and I put 110 in. Is the gauge on my pump broken or are these guidelines stupid?

    A similar thing has happened on my commuter a few times. Recommended 90 psi, put in 70 and the inner tube forces the tyre off. That was with my micro pump.

    Why don't the manufacturers set their maximum psi lower? I most definitely had the tyres on completely secure etc etc.

    Anyone else experience this?
     
  2. john59

    john59 Guru

    Location:
    Wirral
    It’s never happened to me as yet. But these articles may be worth a read.

    http://www.sheldonbrown.com/tire-sizing.html#width

    http://www.schwalbe.co.uk/pdf/techinfo.pdf

    John
     
  3. fossyant

    fossyant Ride It Like You Stole It!

    Location:
    South Manchester
    Probably how the inner tube is seated - i.e. caught under the tyre....

    Talc the tube and inner side of the tyre before fitting - makes life easy !!!
     
  4. RedBike

    RedBike New Member

    Location:
    Beside the road
    Never found this myself and I always pump my tyres up to the max psi.
     
  5. squeaker

    squeaker Über Member

    Location:
    Steyning
    Need to watch that the tyre bead seats evenly on the wheel rim as you inflate the tyre, esp. if the tyre is a slack fit.
    Schwalbe (and others) spec a min / max pressure range on their tyres.