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Tyre fitting problem! Help!?

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Tyre fitting problem! Help!?

Old 06-03-07, 06:04 AM
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jakx
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Tyre fitting problem! Help!?

Folllowing an inner tube repair I am having a real problem aligning my tyre true with the rim - tried everything I can think of - applying washing-up liquid, waggling and manipulating tyre, pumping up to a high pressure etc etc!

The details: Trek 8500; 26" Bontrager Race Disc 'tubeless' rim with original Jones AC-X 26 x 2.2 (52/54) ... and original inner tube - from new!

Rotating the wheel shows the tyre to be 'twisted' on the rim - evidenced by the irregular gap between tyre mould line and rim edge

Whatever I seem to do, the tyre 'bead' will not locate up and onto the 'ledge' at the side of the rim all the way round - ie it won't 'engage' at a couple of places for about a foot (300mm) at one side and again on the other but in a different area?

Any advice most gratefully received ...

Last edited by jakx; 06-03-07 at 06:10 AM.
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Old 06-03-07, 07:15 AM
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MudPie
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Originally Posted by jakx
Folllowing an inner tube repair I am having a real problem aligning my tyre true with the rim - tried everything I can think of - applying washing-up liquid, waggling and manipulating tyre, pumping up to a high pressure etc etc!

The details: Trek 8500; 26" Bontrager Race Disc 'tubeless' rim with original Jones AC-X 26 x 2.2 (52/54) ... and original inner tube - from new! ...
I believe I have the tubeless same rims, and I also use tubes. Yes, I have the same problem...until I started using Tioga bead wax. When pumping up the tyre, it starts to seat unevenly. Eventually, the bead "pops" into place, at maybe around 30 psi of pressure. Without the bead wax, I'd have to take it up to 50+ psi and the pops were much louder. I'm not sure if this is a problem typical of the Bontrager rim.

However, what you are doing seems correct. I assume the washing up liquid is soap and should have the same effect as the Tioga bead wax. This was discussed a few weeks ago on either this or the Bicycle Mechanics forum - you might want to search on something like "Bontrager", or "bead wax". I participated in the last discussion along with probably a dozen posters, including Sheldon Brown.
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Old 06-03-07, 08:22 AM
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DeadSailor
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yea i had thsi same problem with my bon race wheels and those tyres

little bead wax poped them out
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Old 06-03-07, 04:45 PM
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just pump it up and ride it.
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