I think we have this on the 2GC but a loud whining noise again only in reverse - a bit like squeaky brake but louder. It's done it since day one as like yours is getting louder with more miles - it's booked in but not for another couple of weeks due to limited bookings being taken currently.R1doode said:When reversing I get quite a load groaning noise which seems to be getting louder the miles I clock up. I have read somewhere it is the rear brake pads touching the discs. Has anyone else come across this problem. Car is a M135i. Trip to the dealers looks like it could be on the cards.