One big problem kept this from being the slam-dunk swap we expected: The disc hubs move the wheel mounting planes outward relative to the factory drum hubs, widening the front track by about 1-1/2 inches. To make a long story short, our 15x8 Corvette Rallys with P255/60R15s took a liking to the wheel lips and made turning impossible. We borrowed some stylish rolling stock from Marlans Trans Am to get the car homeand while they fit a little better, they still contacted the front of the wheel opening on turns. Were bummed that we cant keep our tire-and-wheel combo, but we were able to fit a stock 15x7 wheel with 4-1/2-inch backspacing to solve the problem. The set cost $20 at a local junkyard, and we remounted our original tires. We actually prefer the dog-dish hubcap look, so well change out the rear wheels to match.