http://wheels.blogs.nytimes.com/2009/07/06/brake-dust-a-problem-thats-not-really-a...
Cliffs Notes: Joe Consumer hates brake dust, considers it a vehicle "quality" issue. JD Power considers it a quality issue, too. Ford concedes that they wrecked the Ford Focus's brake pedal feel so they could use (I assume) a different pad (it's not clear exactly what they changed), presumably to score higher in quality surveys.
People are idiots, it seems. And JD Power's "quality" metrics are dumb.

