MY 2002 SC430 HAS THE FACTORY BRIDGESTONE POTENZA TIRES. ANY UNEVEN ROAD SURFACE TRIES TO TURN THE TIRES. DEALERSHIP TOLD ME THIS WAS A FRONT END ALIGNMENT PROBLEM. BUT AFTER THE FRONT END WAS ALIGNED, THE PROBLEM IS ONLY SLIGHTLY BETTER. IS THIS AN INHERENT PROBLEM WITH THE POTENZAS? WHAT TIRE WILL PROVIDE THE BEST ROAD HANDLING PERFORMANCE SO I CAN ENJOY DRIVING MY FUN CAR?