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  • seating tyres

     richard s updated 7 years, 8 months ago 7 Members · 12 Posts
  • richard s

    Member
    26 October 2012 at 11:25 am

    i have just fitted a pair of tyres and i cant get the rear to seat properly. i have pumped the tyre upto 70 psi which seated it better but when i dropped the pressure it returned back to what it was before. how do i seat it properly.

    cheers

  • thebiggoldfish

    Member
    26 October 2012 at 11:48 am

    What is the problem exactly is it bulging?

  • zaphod

    Member
    26 October 2012 at 11:50 am

    Tyre soap, or windowlene (because it evaporates). I have used soap water too, but this probably isn’t recommended.

  • giantAstax

    Member
    26 October 2012 at 2:05 pm

    Washing up liquid in a bit of water is fine, even on tubeless with dodgy rims. You may need to get a lot of air in the tyre in one big hit too. If your’re schrader valved take the wheel to a garage and use their compressor, if presta you’ll need to fiddle or build a ghetto inflator.

  • betty_swollox

    Member
    26 October 2012 at 3:41 pm

    How can a tyre not be seated right, can someone explain?

    Cheers 😳

  • cheap as chips

    Member
    26 October 2012 at 3:46 pm

    bent/ out of shape beading (assuming its a wire not a folding) perhaps??

    or a possible bent wheel??

  • richard s

    Member
    26 October 2012 at 6:36 pm

    cheers for the help guys

    and to clarify it is a wire bead tyre and the rim is not bent. if you look at the tyre where it meets the rim there is a line that runs about 2mm from the edge of the rim and when you get so far round the line dips below the edge of the rim then reappears after about 6 inch and when you spin the rim you can see the tread dip on one side as if the wheel is buckled.

  • richard s

    Member
    26 October 2012 at 6:38 pm

    bent/ out of shape beading (assuming its a wire not a folding) perhaps??

    if it is this will the beading reshape itself or should i take the tyre back and if i need to return the tyre is it possible to tell if a beading is out of shape or da you have to fit the tyre to tell.

    cheers

  • cheap as chips

    Member
    26 October 2012 at 6:57 pm

    If its a new tyre just take it back and tell them it won’t seat when fitting, first I’d try putting your other tyre on the rim to rule out that wheel!

  • richard s

    Member
    26 October 2012 at 7:10 pm

    If its a new tyre just take it back and tell them it won’t seat when fitting, first I’d try putting your other tyre on the rim to rule out that wheel

    i will swap back to the original tyre and check that it runs true before i take the tyre back. i cant see it being the rim as i put 70psi in the tyre and it nearly brought the line round the rim to where it should be but as soon as i dropped the pressure down the line disapeared back below the rim

  • Steve Kish

    Member
    26 October 2012 at 8:10 pm

    How can a tyre not be seated right, can someone explain?

    Cheers 😳

    On the odd occasion, the bead on the tyre (wire or Kevlar) sticks to the inside of the rim below the ridge where it’s supposed to be mounted. This is sometimes caused by the rim tape not being central in the well. Lubricating the contact point between bead and ridge usually helps the tyre settle where it should.

    I occasionally get this and brush a mixture of one part Fairy Liquid and four-ish parts of water onto the inside of the rim and inflate the tyre to 10-20psi more than usual. Works every time … then I just have to wipe the load of bubbles leaking away and let the tyre down to the recommended pressure.

  • richard s

    Member
    29 October 2012 at 8:05 pm

    tyre now sorted. i took the tyre off and as mr kish suggested the rim tape was not central in the wheel. so i got some glass cleaner sprayed it round the edge and as suggested it seated fine

    cheers

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