Bought these to ride for the May bike more challenge to swap out my wider winter conti 4 season tires. They feel faster with less rolling resistance (28mm) and are lighter than the 32mm 4 season ms I ride during the winter but Ive experienced 3 flats during the month of May with 464 miles on them. The inside of the tire feels a bit rough (you can see the ridges if you turn the tire inside out) and I think they rub the tube quite a bit which have caused my flats. They arent pinch flats or true punctures but look like more frictionrub causing the flats. May put tireliners on or switch over to slimmer 4 seasons instead.
Conti 4000s tires have been the most puncture resistant of any high performance tires I've ridden. They are grippy, easy to mount and light weight. I run these tires on nearly all my bikes. Western Bike Works always has great prices and fast service. Thanks!
Have ridden on this tire for 18 months in 28 width. Have always ridden 23 to 25 but after doing some more research decided to try the 28's. As with many things in life it's hard to admit that everything you thought you knew was right is proven wrong when you finally give in and try. These tires are not slower, they might be a little heavier but not enough to make a difference for most riders. Their toughness is amazing. I finally decided after a summer of riding to buy another set in preparation for spring. The current set has multiple slices that would have flattened other tires.
I've been riding Conti Gatorskins and Hardshells for years. I've found the 4000 SII as a better all around tire. They still have excellent puncture protection with the benefit of better rolling resistance. Highly recommended
I cycled 13,000 miles in 2017 and am on track for 11,440 miles in 2018. Fitness is my goal and I belong to two cycling clubs for weekly rides. I ride the GP 4000 tires in the dry season in Oregon, and the only downside is the propensity to flat and gash-out before the tread is worn down on the rear tire.
I always stock up on a few of these tires whenever they are on sale. They are light and durable. I use them for races and training. Rarely will they flat, and that is usually caused by steel wire from steel belted tires that litter our roads.
For past 5 years or longer I have ridden on another brand tire, I was satisfied. Bought a pair of the Grand Prix S II's, and have only one of the two currently installed (on the rear). I immediately noticed a nicer ride, felt stickier too. Definitely a better ride than what I was accustomed to.
I'll go out on a limb without any empirical evidence at all - the tire seems faster. Just a a couple rides and will be changing the front soon - so we'll se about that. Have to give them a season to see how they hold up. But so far - nice tire.