This may be a repost. I have a new 2007 C4S arriving this month with XRR Carrerra Sport wheels. I understand that they are delivered from the factory with 67 offsets and thus have 17 mm wheel spacers installed (rear). I have a new set of Sport Design 51 mm C4S takeoffs for winter wheels. Are the wheel bolts holding the spacer on the correct length for the Sport Design wheels to be installed with. Also I am assuming the Carrerra Sports come with wheel nuts as opposed to wheel bolts. Is this correct. I am getting the wheels installed at a tire shop and want to make sure we have the right wheel bolts Thanks