Jellycrablegswrote a review of Continental Grand Prix 4000 S II Tire - Clincher on May 12, 2015
Familiarity: I've put it through the wringer
I've run these tires for about 12,000 miles (not the same pair obviously) and I can't say enough. The ride quality is smooth, responsive and grippy regardless of weather. I have honestly flatted about 5 times. 5 in 12,000 miles. I can generally get 4000 mi on the front and 3000-3500 mi on the rear and I'm a 200lb rider on country and chip sealed roads. There are probably better riding tires, and stronger tires, and there are certainly cheaper and more expensive tires, but I cannot find a perfect combo of everything. These are my only choice in tires. Period.