i dont slam on brakes. im never hard on them.. im suprised nobody else has this complain.. take your front hubcaps of and just look at the amount of dust is on them.... i put the wheels on with about 1300 miles.. washed it twice in that time.. brake dust is crazystop slamming on the brakes.
i have 1028 miles on my xb and i bought mine 2-3 weeks ago.
i take it easy when i drive and maximize my fuel economy.
i have a little brake dust, but not to your extreme.
slamming on the brakes or breaking hard cause more then normal break dust.