I Have a '67 Mustang that I recently put '75 Mercury Monarch Spindles on for the disc brakes. The only issue I have is that my original wheels won't fit over the new Hub Assembly. So I found Rims that did fit. I went from 14 x 5 all around to 15 x 7 on the front and 15 x 8 on the back. Got Tires and got every thing mounted... looks great. but when I hit bumps it scraps the edge of the tire on the rear quarter panel where the tread meets the side of the tire. At the Curb w/ nothing in the trunk or backseat there is about 1 3/4" between the tire and the panel. What should I do? Roll the Fender? All the competition spring LOWER the car.... or do I have to get new rims and tires....