The grand prix tt tyre follows in the tracks of the time trial tubular podium tt a pure time trial tyre for serious competitors it39s ambitions are apparent by looking at the tyre and seeing the slick centre tread profile ensuring every second is maximised the slightly roughened shoulders give good assurance on rougher cornering the grand prix tt is particularly lightweight thanks to it39s minimised tread and is indescribably fast due to the latest black chili compound it39