Testers and triathletes you cant go faster can you the grand prix tt follows in the tracks of the time trial tubular tyre podium tt a pure time trial tyre for serious competitors its ambitions are already optically apparent a slick centre tread profile ensures a few seconds are saved whilst the slightly roughened shoulders give that extra assurance on rougher b road bends particularly light thanks to a minimised tread and indescribably fast due to the latest blackchili compound its