pass. front brake caliper bad

why is the wheel hard to turn? what type of disc brakes? 4 piston or floating single caliper? sometimes it helps to lightly file the sliding run on the caliper adapter and the run on the caliper itself and then use some good grease to help them slide. (If you have the sliding caliper)pins in pin type calipers need to be in good shape and lightly greased. If the pistons in the calipers are sticking, they should be rebuilt. also, if you leave the wheel bearing slightly loose it will help to retract the piston, thus creating less friction at the track but you didn't hear this from me (wink wink cause it is slightly dangerous)