I have the uneven wear on the rear pad. When I brought my car, my friend who test drove the car notice it. The owner even gotten the pin to have it replace. When I changed my rear, the tech told me about the uneven wear on the pads. He re-grease it and tested out infront of me. I thought that problem went away.

Lately, I noticed the rubbing noise when it just rain or when the road is wet. If its the rear, maybe I'll just leave it alone. Since most of the breaking is at the front, i can live with it and change it next time.