Continental Grand Prix 5000 S TRWe're simply spoiled with using tubeless tires in all of our cycling disciplines and have come to enjoy the ability to run lower pressures for improved grip, comfort, and less rolling resistance. So, when we heard Continental was revamping its GP4000, a tire so universally loved as a competition worthy tire in terms of weight, grip, and rolling resistance, but durable enough to fend off debris and with the ability to rack up some miles before it began