• Hah, not there it. Mr Slowness here.

    Will let you know how I fared later on. Thanks for your help!

  • I exchanged the QR skewer for a Pitlock one and then renistalled the QR.

    The situation was the same - the rim seem centred at about 12mm each way. The tyre though is also the same: one side has a gap of about 4 or 5 mm (just like my racing bike clearance), the other side about 7 or 8mm. I can stick a small plastic item through one side, but not the other.

    I've made sure there sufficient air and when I spin the tyre, it appears to remain more or less constant in its sideways width. Could it be the frame itself?

    The seller claimed that the bike was designed for 650b with a max. tyre width of 40mm. That was a big reason why I bought the bike. If one side is the same as my racing bike, then I wonder how that could be enough clearance for such wide tyres.

    In the first photo, before he changed out the components, he had 28mm tyres installed. On receiving the bike, it had older 32mm tyres on. So now I am wondering if there was a reason for not having fatter tyres on. I don't have such tyres to test it, but I assume the gap between tyre and frame will get worse.

    32mm tyres are fine, but there are huge 10mm gaps between tyres and mudguards and it looks quite ugly.

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