New from Michelin for 2008 Lightweight at 200 grams Reported to be 27% more adhesive than the Pro 2 while cornering. It features a vectran puncture layer. Their performances seem exceptional and are even higher than the Pro2 which were already among the most performance tires. The cornering grip is increased of 27% and the rolling resistance is reduced. According to the statistics (more than 1 million kilometers), a flat might happen every 5700km while the tire life is 3500km. In short, it is almost not possible to have a flat with them!