are you sure the tire is rim is sitting flush on the brake rotor? i bought some zq8s for my truck and i have to get the center machined out a little bit because there is a slight lip that is in the middle of the rim. MAKE SURE THE WHOLE LUG NUT GOES THRU THE RIM, if it doesnt you either need to take a dremel to the inside lip or send it off to a shop to get it machined out. good luck. pm me with any other quesitons.
kevin
kevin