Recently fitted a full set of these to my Audi R8 V10 Spyder, instead of replacing the P Zeros with the same i decided to try these out based upon recomendations from Audi and Forums. I have to say they are so much quieter than the Pirellis, very good feedback and cornering at high speed and on the track is better than the P Zeros, they are similar in price. hoping i get better wear too as the P Zeros only lasted 6000 miles ( although this did inc a couple of track days ! )also very reasuring in the wet and braking. Very happy with them.