I'd like to go down to 15 inch rims for autocrossing. However, we tried to put stock 15" focus rims on my SVT and the front brake calipers we're slightly to big for the rim to fit. It wasn't the 15" diameter but the caliber hitting the spoke on the offset. I'm thinking it's because it's a 6" wide rim versus a 7" wide rim. Before I go buy some 15 x 7 inch rims does anybody know if they will fit over the calipers on my SVT?