Seeking advice on how to extract broken lug bolts

Help with a broken bolt drilling procedure.

IF you have a few threads accessable in the hole. Find a bolt with the same thread size, drill a hole down the center from the thread end. Cut the bolt so you have a threaded hollow tube. Screw the tube into the hole. That way you have a centering device to start a pilot holes for drilling.

Either way I would listen to Syleng1!