Is it inside the door? Not the jacking point is it?
Thread hijack - I seem to have a rattle on a certain road/surface at various speeds - coming from the rear, sounds like it's AROUND the nearside rear passenger seatbelt... that kind of location/height, but obviously I can't pinpoint it as I only get it when driving at (for argument's sake) 50+ and it's not really the best plan to drive whilst looking backwards into the car
Any idea what it could be? It's not the seatbelt, I don't think... sounds like some kind of trim, but around that area.