Hi all, first post in this group.

I have not owned a BMW since 1987… and not owned any kind of bicycle for 20 years so please go easy on me!

I just bought a well used Blank Tyro with 20” wheels and 20.4” top tube. My intentions are to tidy it up a bit, make some modifications for fun, and mostly use it to ride along with my little boy who has just started riding a bicycle himself.

The bike is completely stock, but the first thing I noticed is that the rear tyre is catching/rubbing quite badly against the chain stays part of the frame, and also on the brake calipers. So much so that the wheel takes a bit of force to rotate.

The tyres are the stock 20×2.3” but they genuinely seem too big.

I have tried adjusting/moving the wheel slightly but no position seems to clear the brakes or frame.

The tyres are inflated to about 50psi each (says Max 65)

Any suggestions? Thanks

by LordHolborn

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2 Comments

  1. WhatAMessIveMade on

    You have a few options on fixes here but this isn’t an uncommon thing to happen. I’m just gonna list a few options for ya.

    – true your wheel
    – add a link to your chain so your wheel isn’t slammed on your dropout
    – pull your wheel back (if the chain shows slack)
    – buy a thinner tire

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