the front badge on my z4 e85 wanted changing they seem to sell for £50 -£60 i suppose because they are 70mm a unusual size for a bmw got to thinking the wheel insert is 70mm cost not much on ebay remove a grill undo 2 nuts remove old badge cut the fixing tabs from wheel insert use silicon sealer to fix you cannot tell its not a £50 badge ....yes i know i am tight .