I have stock calipers. There is a lot of clearance between the new wheels and the calipers, more than there is with the stock wheels. The wheels cost me $125 ea., but I had to wait a long time for them (they came from England and they had to wait to fill a container or part thereof) because I think I was the first person to order them for an ITR and they had none in stock. Distributor told me he was now going to keep some in stock. Tires cost $204 ea. I think from Tirerack, and they have fantastic grip. The tires weigh 20.4 lbs ea., making each wheel and tire combo weigh a total of 33.6 lbs, whereas the stock ITR wheel with an RE-010 195/55/15 weighs 35.0 lbs. So my set-up is wider and lighter.

A note with regards to the rub in the front: the Ground Control guys shipped me 7" springs and this lowered the car 2" with the spring perches turned all the way up. I suspect they sold me springs which are too short, and that 8 or 9" springs would have been more appropriate, since they would allow me to raise the car.