Cool...I can't wait to see them on the car. It should be a great comparison considering both our cars are Silver.
I heard that with aftermarket wheels you need to torque them to a certain amount then drive with them for a bit(2 days?) and re-torque to make sure. Something about the metal around the lug seats flexing or moving...I can't remember exactly.
Edit: BTW, what size Kumhos' did you get?