Originally Posted by ES_TRADER
None of the aftermarkets can compare to the brightness of the oem LEDs on the new cars. I've seen many 3 pre lci 3ers on the road next to the wife's lci 328i e92 and from the rear view mirror it's always a big difference. Those light up white or blue but just not as bright for some reason. I really want to upgrade the color of the m3 rings but I won't sacrifice brightness
The smaller halos and individual LEDs for each halo are definitely help.
E9X M3s use a fiber ring for the outer beam and plastic lens for inner ring, which has already been phased out on later BMW models.