One of the most common complaints about the '13 Focus ST is brake dust...along with the small 12 gallon fuel tank. No matter how conservatively I would drive and brake, the brake dust accumulation was maddening. Within 100 miles of a wash, the wheels would be covered in gray ash, and if you didn't wash for 500-800 miles, they were downright black. No amount of wheel wax would help, and I would literally spend as much time washing the wheels as the rest of the car on car wash day.
So last weekend I replaced the front pads with ceramic pads. I've driven about 100 miles since and a finger swipe on the front wheels yields no dust. The rear wheels do still have a layer of gray, and that will be remedied this weekend.
jagec speaks troof.