The Continentals have gotta ride better than the Michelins, seeing that one is pure performance. The other suggestion is to go with a taller profile giving you a bit more "cushion". I've seen 235's on the front and 265's on the rear, but that's about it. You might have to sell the car because it is a sports/tourer after all. BTW, your car is the nicest lookin' one here, was it repainted and what type of wax do you use, we gotta know!