2011 300i downtown longest ride so far 550 miles , I went through the cushions and pads, did not like them , I had a cover made by a Pro. and I did the foam using rebond foam, I am long legged, so I put 4 inch. foam on, and cut the round hump flat off, left the edges Square and pulled down on the cover to give it shape, that will give more seat side to side, and I put a 1 inch slope in the foam so I dont slide forward when braking,