In December as part of the end of the three year new car warranty check organised by Sytner Birmingham I asked them to look at the folding roof as it had become noisy, rattling like no end over our pot holed roads. The noise was coming from above and behind the drivers seat and was of a rattling nature. Certain parts were ordered from Germany and fitted a week ago under warranty. The work I was told , consisted of lubricating the seals and placement of some felt pads. It has done the trick and the roof is now rattle free. BMW clearly know of the issue.