[QUOTE=Gybson;4451848] The front right is making a periodic grinding noise when coasting. Under braking or accelerating, this sound isn't audible. It speeds/slows with the speed of the car, not with RPMs. Sounds worse at slower speeds. If coasting at 60mph it's nearly inaudible. /QUOTE]
MY initial opinion is that your pads on dragging on the rotor. This is usually caused by dirty or improperly lubricated caliper slider pins and is often overlooked during a brake job. Clean them and lubricate them with a high temp grease and then give us a follow up on what happens.