The perfect option for those looking for an affordable tire that is tubeless-ready. It comes with BlackChili Compound and has an all-new 4-layer construction, which perfectly balances puncture protection and rolling resistance. Whether you're training, driving to work or covering a long distance, the Grand Prix TR has everything you need. The Grand Prix TR is made from BlackChili compound and has a brand new 4-layer construction, which offers the perfect balance between puncture protection and rolling resistance. Whether you're training, commuting or traveling long distances, the Grand Prix TR is there for you.