The brake dust is INSIDIOUS...

The front door jamb. The leading edge of the rear door. The rear of the rear door opening. The exterior of the rear hatch. The sticky margin of the paint protection film on the rear door opening (that stuff isn't coming off). Unless you track your car the first thing I'd suggest to a new owner is to swap the pads out. We got the gray wheels after reading about this, but man, this stuff gets everywhere.

EDIT: oh, I see. There are no other street only front pads available