put wet okole covers on the vette. they are made of neoprene and fit great. about $200 for a pair, your color choice, fits like a glove. Had to take the seats out to install them, but you should not have to do that on the bimmer. If I was in extreme cold or hot, I would get them again. Also, lined with thin rubber to avoid sliding, marking, or rubbing.
(man, I should be a salesman for them)