The Continental Grand Prix 4000S II Road Tire is the reference tire in the road bike market and has gone through numerous stages of evolution. Conti's flagship tire now gets a facelift! The discreet bead strip allows us to color coordinate the tire to match your bike perfectly without losing the BlackChili tread performance. This provides improved grip in poor riding conditions, increased puncture protection and greater comfort. The proven aspects of the 4000 S II remain unchanged. Vectran breaker for unsurpassed puncture protection, advanced BlackChili compound for low rolling resistance and sensational grip, and handmade in Germany.