Hi I have a 2005 F150 with 16000 mile, recently both rear brakes hung up, I check the parking brake that was the problem, both rear calipers were hung up??? I put ceramic brakes on the front about 2000 miles ago to cut down on the brake dust,would this have any effect on the rear brakes?? I took the rear brakes apart and reassmbled and it has not happened since. Any ideas why they would hang up??

Thanks Brandoon