The tires are on a set of ENVE wheels. Regular road use. Great grip. I use the 4000 S tires on all my clincher wheels
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.
I do alot of riding at night and these tires are perfect for us. They reflect really well and are nice and sturdy.
Conti GP4000s are known for their low rolling resistance, and my own personal spin-down tests on my training rollers confirm this. The supple sidewalls come with a price, however-they are a little more prone to punctures if you accidentally drop your bike into a pavement crack and snag the sidewall. Easy to do in bad lighting conditions. That's where the reflective version comes in. The reflective strip provides a little more sidewall protection and helps cars see you in the dark. They are very handy on bike tours when you have to negotiate your way back to your tent at night using a headlamp-you just have to look for those big bright double circles.
Tires performed well
This is not the smoothest rolling tire. It My last set made it over 3000 miles. For the money, to get a durable fast rolling tire, this one is hard to beat.
I use this product for crit racing. The tire conforms to the corners well and have good flat resistance on the open road.
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.
Will try the 25 but have ridden 23 for 1000s of miles with rarely a problem.
My favorite tire. Good mix of road feel, rolling resistance and puncture protection.
Good rolling resistance and traction plus a fast tire. My only issues is are the sidewalls get easily damaged and the tires is hard to install on aluminum rims.
Amazing product. These are the only tires Ill ever need or want. As advertised. I only ride about 1,000 miles a year, but no punctures over last 2 seasons. And I ride on some roads. Ill give 5 stars because these Continentals are perfect for me.
Great all around tire for training and racing
I commute at night on my S-Works Tarmac and an thrilled to have tires I can do Masters races on each weekend, yet be highly visible on my night commutes! Great job Continental mixing a performance tire with a highly visible reflective sidewall!
Expensive, but great tire. Rolls very well and is very grippy.
I was a tried-and-true Grand Prix 4 seasons Tire user for over 10 years. But this summer I decided to put some 25 mm 4000s's on my zip 303 s for a summer trip up to Breckenridge Colorado. I was afraid I would experience more Flats. But I knew going from 23mm to 25mm width, Plus lighter weight, less tread, and using 10lbs. less tire pressure, would add up to less rolling resistance. Which would make my climbing over all the major passes much more enjoyable. And guess what,, it DID!
Even back here in Tucson on some of the chewed up, debris ridden roads, I don't think I've yet to change a flat on a ride.
Until proven otherwise, I'm totally sold on the 4000s. Especially when used on the 25mm width newer carbon fiber wider rims (Zipp,Enve). The ride feels extremely comfortable. Definitely worth trying.
I like the rolling resistance, very fast
However, when new they are a bit slick
Great tire. Rolls amazing. Smooth, fast. So far durability feels solid. Bought another set when they went on sale.
I have Conti GP 4000 S on several bikes. They are my go-to tires for my rain bike, road racing bikes and tandem. I have used them in 23, 25, and 28mm widths. I have long loved the feel, traction and durability of these tires. Puncture resistance seems really good, too. The only improvement I could think of is for Conti to make a tubeless version available!
The Continental Grand Prix 4000 S II 700c Road Tire is the longest lasting road tire with the best puncture protection I have used. I have been using these tires for the last 6 years and I usually get 4 to 5 thousand miles on a set with rotating them every 1000 miles. I get the least amount of cuts then any other tire I have used in these tires.
