back tyre.....

mtb crazy
mtb crazy Posts: 245
edited October 2011 in MTB general
am i doing something wrong? my back tyre seems to be always going flat recently or losing air really quickly, despite me changing the inner tube at least twice....... is this a fault with the tyre instead of the tube?? has this happened to anyone else?!

Comments

  • mtb crazy
    mtb crazy Posts: 245
    i have been pumping it up properly aswell....
  • nicklouse
    nicklouse Posts: 50,675
    you still have the cause of the original puncture in the tyre.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • cooldad
    cooldad Posts: 32,599
    Have you checked the tyre for what was causing the puncture before you change the tube? Check inside carefully - feel all the way round.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

    Parktools
  • bartimaeus
    bartimaeus Posts: 1,812
    Have you checked for a puncture in the tube? If the tube has a puncture, have you checked the tyre in the same place to make sure there isn't something sticking through it? If you have something sharp in your tyre (e.g. a thorn) or some grit inside the tyre, then it will keep puncturing you tube until you sort it.
    Vitus Sentier VR+ (2018) GT Grade AL 105 (2016)
    Giant Anthem X4 (2010) GT Avalanche 1.0 (2010)
    Kingley Vale and QECP Trail Collective - QECP Trail Building
  • mtb crazy
    mtb crazy Posts: 245
    hmmmmmmmmmmm. ok will do that tomo, might mean buying new tyre then.
  • bartimaeus
    bartimaeus Posts: 1,812
    Unlikely... if you remove whatever is sharp then you'll have sorted it.
    Vitus Sentier VR+ (2018) GT Grade AL 105 (2016)
    Giant Anthem X4 (2010) GT Avalanche 1.0 (2010)
    Kingley Vale and QECP Trail Collective - QECP Trail Building
  • mtb crazy
    mtb crazy Posts: 245
    whihc tyres are good to buy though? at the moment i have schwalbe rapid rob tyres, looking for a good beginner one but with lots of grip....
  • TuckerUK
    TuckerUK Posts: 369
    Or you could just remove the offending object from the tyre?

    Just a thought...call me crazy.
    "Coming through..."
  • mtb crazy
    mtb crazy Posts: 245
    ill have a look and see if there is.
  • davewalsh
    davewalsh Posts: 587
    Could also be the rim causing the punctures. Check there are no burrs around the valve hole and that the rim tape is correctly positioned in the middle of the rim.
  • mtb crazy
    mtb crazy Posts: 245
    ok thanks davewalsh, will check it all tomorrow., i hope its not anything to do with the tyre or rim.....
  • cooldad
    cooldad Posts: 32,599
    Have a look - if it's the tyre will just be a little thorn or something or the tyre would go down straight away. Doubt it's the rim if it's just started happening. feel around carefully - you can feel things you can't see.
    Take a look and if you can't find anything arrange to come out for a ride next weekend and I'll take a look.
    The tyres are good, no need to change them. Until it gets seriously muddy anyway.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

    Parktools
  • Northwind
    Northwind Posts: 14,675
    Right- what to do is, when you remove the inner tube be careful to keep track of where it was fitted- so that when you find the hole in the tube you can then look at the wheel and tyre in the same place and find if there's anything there. Slightly easier said than done, this, but not too hard.
    Uncompromising extremist
  • nicklouse
    nicklouse Posts: 50,675
    Northwind wrote:
    Right- what to do is, when you remove the inner tube be careful to keep track of where it was fitted- so that when you find the hole in the tube you can then look at the wheel and tyre in the same place and find if there's anything there. Slightly easier said than done, this, but not too hard.

    and people wonder why some people line up the valves with the name/logo etc.

    it makes this easier and faster to do.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • Northwind
    Northwind Posts: 14,675
    Aye, absolutely. And doesn't take any effort to do, either.
    Uncompromising extremist