Suspect this is actually down to the drivers side brake calliper which appears to have decided to stick on - another job for the list
Have you seen the infamous blue Z3 around Sheffield that looks like a mobile rubbish tip? Montreal blue 1.9 on an S plate, filthy dirty, rusty, battered and a boot rack that permanently has suitcases strapped on. It runs on three cylinders and I've spotted it in most areas, mainly the Intake area.