I use soap and different brushes as others stated. Proper cleaning of the ZCP wheels takes me about an hour for all.....
And I pull the wheels out once year to clean them properly and detail the wheel wells at that time as well.
Retired: 2011 E92 M3 AW w/ Silver Novillo ZCP, ZTP, ZPP, 494, 6FL, 507, 302 & 415.....ED April 29th, 2010
Retired: 2007 E92 335i -Space Gray, Black Leatherette + Alum, Nav, ZCW, ZSP, PDC, CA & Sunshade.....ED Oct 19th, 2006
Last edited by TTG; 04-26-2012 at 08:23 PM.