this morning when i was on my way to my shop my brakes started grinding, get to the shop pull it in and pull the wheels i found both inside rear brake pads had rotted apart. drivers side was almost all the way gone and pass. side was completly gone, the pistons were rubbing on the rotor. This is on a2000 F250 4X4 superduty. i found out this is a common thing on these trucks, so if you have one in that era take a look.