I have a 2002 911 Turbo with these on all 4 corners. I am not willing to buy tires every 10,000 miles because of some perceived benefits like the PS2's. These tires are the first ones I have had and am pleased with the overall performance and mostly the tread wear. Any sports car especially the Porsche wears out rears basically twice as fast as the fronts and that is normal from what I have been told. I am in the process of replacing these with new ones just like them and will save almost $800 in the process. I recommend them.