I know it isn't an F-150, but, my F-250 is having brake problems... What would cause my left rear brake (specifically the inner pad ONLY) to be dragging on my rotor?? The piston in the caliper will compress just fine when I squeeze it with a C clamp... Any ideas? The truck has disc rear brakes.

 

Just like on the 150s, the rubber hose could be collapsing internally

 

If only one side is rubbing, its probably the slider pin... check them out. They probably need to be cleaned and greased.

 

Slider pins were cleaned and greased with anti-seize today. Brand new rotor and pad... It was doing this before the new rotor and pad, which is why I had to buy a new rotor and pad. I'm thinking its the caliper.