raymond.harper
Senior member
I watch this chap's videos and always like to pick up a few pointers. At 10.55 he explains the bump on the back of the brake pads should correspond to the slot in the brake piston. The Z4 as far as I can see does not have this but other cars I own, R56 Mini certainly do and this explains why I had the odd "sticking" caliper. At 17 minutes he advises, according to Pagid, to avoid using copper grease as it can interfere with the brake electronics. It is worth watching https://www.youtube.com/watch?v=KvUaslff33E&t=690s