I have a Schwalbe Marathon plus 16 x 1.35" tyre on the rear of My Brompton, and it seems to be wearing asymmetrically. I can't see anywhere where it's rubbing, and I'm not aware of having done lots roundabouts, also because I ride roughly even amounts in the Uk and the continent so it should wear evenly from that point of view.
Any ideas what's causing this?
Jh
