I don't know.. I would say my E90 is pretty much the same as my old E46, but since I have an XI there is a little more front weight making for a little more front dust.
If you want to "fix" the problem without changing pads, search the detailing forum here. There are a couple of things that you can apply to the wheels (sealants and waxes) that reduce the dust sticking and make the wheels easier to clean... Works for me.
E90 330xi Mystic Blue/Black Leather/Aluminum 6sp Manual ZSP/ZPP/ZCW/CA
F22 M235i Mineral Gray/Red Leather/Aluminum 6sp Manual ZPP/ZTP Delivered????