Three months after purchase of a 2008 f-250 ford heavy duty truck, i noticed the brakes squeaking. on 4 occasions i have taken the truck for service to check for the cause of this problem. the first 3 times at the same dealership i was told that the squeak was caused by "road debris", and that nothing could be done to prevent this from recurring.( the dealership cleaned the brake pads).on the forth occasion, the dealership reported that the brakes were fine and had 60 % capacity. this occurred on 8/3/2010. october 15, 2010 the squeaking was so loud, we took it to a third dealership where it was found that the rear brakes were severely worn and rusted. it required a sledge hammer to remove them due to the amount of corrosion that had built up. the front brakes were fine. our concern is that there is/was a defect in the rear brakes and that this is a safety issue, since we pull a heavy trailer. we have kept the parts for further inspection at our residence. i have contacted the ford customer care line who recommended this site. and who offered no further assistance with this problem, including how to prevent further problems. *tr