19-09-2015, 06:37 AM
there are various piston sizes, two disc types where the main difference is the height of the disc, the later 22mm are taller so give more clearance for the deeper offset 206 wheels, though the lower offset earlier stuff clears 14"s just fine.
need a part number? http://public.servicebox.peugeot.com/ and http://service.citroen.com/ will sort you out.