




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
2 Comments
Sorry, my mistake, tyres are 2.4” not 2.3”
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