I barely made it home from the car wash without brake dust after physically scrubbing my rims in my 2007 e93. I'm 3000+ miles in and I've only physically touched my rims a handful of times on my 2012 F30 335i with 19s. It's MUCH improved!! For the most part I just spray the rims down once a week @ the car wash. I wish I could say the same for the damn black paint!
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