because the number plate is in a recess lower down the bumper instead ?
Jeez your argumentative tonight fox.
Z3M with number plate under chrome bar and no recess in bumper
http://www.pistonheads.com/sales/2109986.htm
Z3 non m bumper with recess for plate in bumper :
Jeez your argumentative tonight fox.
Z3M with number plate under chrome bar and no recess in bumper
http://www.pistonheads.com/sales/2109986.htm
Z3 non m bumper with recess for plate in bumper :


much more capable