the rotor where the 5th stud (or lug nut) should be. I'm not sure about particular cases where peoples rotors have warped from one missing...what about you Brad?? But either way I'd rather be safe than sorry, you know?
Daily Driver: 1997 Red Geo Metro 2 door Hatchback Truck: 2007 White Nissan Frontier SE Crew Cab 6 Speed