Rotors get grooves in them due to either something hard geting stuck in the pad, usually a rock- or uneveness in the pad material hardness or the rotor itself. It shouldn't cause vibrations though.
Pads and rtors are realtively cheap though and if you are due, just swap them out. If it's at a dealer, have them put the original Ford stuff on there. If it's not- just install whatever the shop likes to use, but have them stick with a plain rotor.
Pads and rtors are realtively cheap though and if you are due, just swap them out. If it's at a dealer, have them put the original Ford stuff on there. If it's not- just install whatever the shop likes to use, but have them stick with a plain rotor.