I have 12 focus SEL, and I want to put on a set Konig Lace 17" wheels. But the direction I want to go is 17x7 up front and 17x8 in the rear for the staggered look. What is the max width on th front and rear can I go before the tire rub on the body. I would like to go with the 18" wheels, but I'm afraid of damaging the body when I decide to lower the car. I like the staggered look a lot and I think it would make the car look tougher.