Sounds to me like the rear caliper bolts weren't properly adjusted the last time the pads were replaced, and they've been dragging on the rotors ever so slightly for 8000 miles.
I finished the rear brakes yesterday. The old pads had less than the width of a sheet of paper left on them, so at 96K I figured these must be the originals. Checked the fronts, they still had plenty of meat left so I didn't bother. I went to the big stack of receipts the PO had left in the glove box to see when the fronts had last been done.
What I found instead was a receipt for replacement of the rears, less than 8,000 miles ago.
So what do you think? Replaced the fronts, but wrote rear? Didn't replace them at all, but charged anyway? Or is there something that would wear down the rear pads in that short time? Everything works normally, braking is fine, so I'm curious what has happened here.
Sounds to me like the rear caliper bolts weren't properly adjusted the last time the pads were replaced, and they've been dragging on the rotors ever so slightly for 8000 miles.
Iain
"We don't stop playing because we grow old, we grow old because we stop playing." - George Bernard Shaw
Didn't back out the piston the 1/3 turn? Could be. The wear was evenly matched on both sides.
Could the parking brake need adjusting?