Noticed that additional force on the brake pedal was required in order to stop the vehicle. brought into dealer and they stated that the backside of the rotor is rusted away and that there is only 1/4 of an inch of contact on the rear side of all 4 rotors. vehicle has 30,000 miles and is out of warranty, dealer said corrosion is normal in the northeast and now wants $1,000 for a new brake job. *tr