[DenverSteve]

This is so easy - THERE IS NO BEST. Your temperatures, humidity, altitude, speed, traffic conditions.... Will be different than almost everyone else. Therefore, this is an unanswerable question. If I were you, I would start with what came stock on the car. That's probably Michelin. You won't be sorry and you'll see what Porsche put on these from the factory. Then you can adjust from there, if necessary.

Otherwise, you'll just have a list of every tire made. Happy motoring.