All around tire designed for every ride Black Chili Compound features special synthetic rubbers combined with proven natural rubber to high-performance tread mixtures, to optimize rolling properties and grip PolyX Breaker puncture protection with dense polyester weave for durability without slowing you down The Grand Prix is a comfortable and reliable all-rounder tire with solid construction Whether training, commuting or going the distance – The Grand Prix has you covered. The Grand Prix is a comfortable and reliable all-rounder tire with solid construction, made for sportive tours in demanding terrain. The unique tread compound revolutionized the sport of cycling, features with the latest polymers and specially developed carbon black particles and filler materials to guarantee unique performance, be it on a road, gravel or a mountain bike, for time trials or downhill. Whether training, commuting or going the distance – the Grand Prix has you covered.