Brake Dust
You guys get a tremendous amount of brake dust off your four-wheel discs?
I got some (*SHREEEK*) bug splatters on my car and I was washing them off and then noticed all this black dust all over my car. I was traumatized. I'd imagine the dust must be really abrasive.
See, that's why I was thinking about changing the stock 20" rims to a Centerline-syle rim; to keep all the brake dust from getting all over the body of the car. It looks like hell.
FYI, I drive the Challenger "like an old grandpa" and have not been really leaning on the brakes at all.
I've got 122,000 miles on the original brakes in my Jeep Cherokee.