update

Got a new belt on, some of the squealing was due to the serpitine spliping and such. But I still g et noise when I am turning, I was checking tire preasure tonight, and toniced a weird wear pattern on the front left rotor. It looks like the top 1/2 inch is a clean silver color, while the rest of the rotor is a dirty, brake dust color, this is the same on all of the other rotors. What could be causing this and what can I do to fix it?

1995 ford contour v6 5 speed , even though its not mine yet... http://www.cardomain.com/id/hyperlitenerd