Powdercoat or paint those rims glossy black so the brake dust washes off easily. When my wheels were plastidipped the brake dust caked on and turned them brown. And washing didn't help it either. I ended up with brown rims after 3 months.
Nice GT by the way. I hope that I'll be able to afford one when I'm in the market again in a year or so.
Former e92 M3 owner
Relapsed M3Post addict
Hopefully getting back into another ///M soon (or P-Car)....P-car as in Prius.