Continental Grand Prix 5000 S TR Tire - 700 x 28 Tubeless Folding Black BlackChili Vectran Breaker LazerGrip ACT. The Grand Prix 5000 S Tubeless Ready allrounder tires are lighter faster and supported with stronger sidewalls. Designed to be compatible with hooked and hookless rims this new standard in road tubeless ready technology will allow you to ride faster more comfortable and with increased puncture protection.Tubeless ready (TR) carcass construction is robust and impervious against damage and penetration from foreign objectsHookless rim compatible up to 73 PSI / 5 bars