Sterio - Just consider the P Zero's your break-in tires. You are supposed to drive the car gently for the first few thousand miles anyways, so the better handling limits of the Michelins will not be missed. The Pirellis are just as good unless you are driving very hard, so just take some time to learn the car with these tires. By the time you are done with the Pirellis (less than a year if you drive much), you'll be ready for the Michelins (and maybe even the new Michelin Sport tires as optional on 997TT and GT3)