Best tire after 20 years of riding ..continental is 2 steps ahead of everybody

PROS: Lightweight, Easy To Install, Durable, Attractive Design

THE BEST TIRE IN THE MARKET

PROS: Attractive Design, Easy To Install, Durable, Lightweight

As a tire connosieur, I am impressed with the ride of these tires. Riding them in the 25c size on a 23mm rim is awesome. They're very lightweight tires and these instantly took a solid half pound off my bike (I was on Challenge Strada Open tubulars before). These aren't as lively or comfortable as the proper open tubular, though. I think it has to do with the casing design. However, these are very fast, very responsive tires.

I don't feel as confident for whatever reason with these through corners as the open tubulars. I think it might have to do with the casing. They certainly corner well and have great grip however. For whatever reason they just don't feel like they "carve" as well. Could be all in my head. I'm a 170lb guy running 90psi rear, 85psi front, and I've been experimenting with different pressures and found these to be the most pleasing. YMMV.

My buddy cut these really bad on a shard of glass on a recent ride... so avoid glass with these tires. The rubber compound and casing work together in such a way to be a little less resistant to slicing but seem to be pretty puncture resistant otherwise. Still recommended if you're looking for a really great all-around tire!

PROS: Easy To Install, Attractive Design, Lightweight, Fast Rolling

CONS: Cuts Easily

BEST USES: Racing, Road Biking

I have a few hundred miles on these 28mm tires and they are quite the difference over the 25mm Giant tires that came stock. A little more cushion thanks to going a size up, great grip, no squirm and they look good.

Fast

I've had these tires for almost a year with no punctures. I love this tire!

PROS: Durable, Lightweight, Attractive Design, Easy To Install

I've been riding the 25c's for just over six months, and these things still have plenty of life left in them, not to mention they still bite great in the corners. As far as speed, I have raced these and concluded that these are very capable tires for just that. However, there are faster, lighter tires out there that lack the longevity of these. My one complaint with these is that they are on the pricey side. However, their life expectancy paired with their grip and lower weight justifies the price tag.

PROS: Easy To Install, Lightweight, Grippy, Durable

CONS: Pricey

BEST USES: Training, Road Biking, Racing, Upgrade

400s IIs are an improvement over the already very good previous model. No flats yet after 700 miles. Used to ride Gator Skin, which gave me great wear--close to 5000 miles, but the 4000 S II roll smoother and I like the grip in the corners. With the very competitive price at Jensen, I would definitely recommend this tire.

500 miles in so far, the 25mm has proven to be a lot more comfortable, corners better, and not a lot of loss at speed.

But enough about 23mm vs 25mm, Conti has really outdone themselves on the SII, the tire feels fast, and the data shows its faster, the only thing time will tell is the durability on the tread wear.

Ive been running these tires for the past 3 race seasons and they have been solid. Super light and roll pretty smooth. And they easy to get on/off.

I never really cared about tires until this summer. Then I stuck these bad boys on my bike and was instantly a category better than I used to be.

Don't skimp on tires. These things rock.

Fast tires, flexible sides and easy to install on carbon aero wheels

Nice price on a quality tire. The tire arrived as stated, very quick.

My second set. First set lasted about a year (several thousand miles and including some wheel-on trainer use). Responsiveness and road-feel was noticeably better than the Schwalbe Duranos I had been using previously. Puncture resistance seems reasonably good, too. It was a no-brainer to get another set when it was time to replace the original ones.

Great tire. I switched from the Pro4 to this tire and am very pleased. Great road feel, fast with road hazard resistance. I have not had a flat yet! These tires are expensive but are worth it.

PROS: Lightweight, Attractive Design, Durable, Easy To Install

CONS: Pricey Poor Value, Price

BEST USES: Upgrade, Road Biking

Great all-around tires. Perhaps not the stickiest or lightest (like true race tires), but they sure are durable.

PROS: Smooth Ride

They arrived on time and undamaged.

I love these i think they're fast, Velonews says they're fast, they grip, they last, don't puncture

Super quick servic as always from Jenson.

Came quick.

Continental GP4000 series tires get better as they age. If you don't like fixing flat tires get Continental GP 4000 series tires.

PROS: Easy To Install, Durable, Attractive Design, Lightweight

BEST USES: Road Biking, Upgrade, Casual Riding, Racing

These tires look tough as nails. Took them for a spin and love the feel!

PROS: Durable

Excellent tyres with great grip. Had a major puncture problem earlier and with these set of tyres the issue is resolved.

PROS: Easy To Install, Durable, Lightweight, Attractive Design

Long time listener, first time caller - have been hearing about the GP 4000 S II's for long time in my Saturday group ride. I was always a Specialized Turbo guy. Tried my first set of GP's and am hooked for life. Best feel, super fast, and confident in the corners.

PROS: Lightweight, Easy To Install, Durable, Attractive Design

BEST USES: Racing, Road Biking

No flats so far. This was most important to me as I was getting flats nearly every ride before.

Great service, arrived much faster than expected and was well packaged.

Product brand new and fast delivery.

Fast delivery

PROS: Happy With The Purchase, Lightweight, Easy To Install, Attractive Design, Great Riding Tire

The best tire for road biking.

PROS: Attractive Design, Easy To Install, Just The Best Tire, Lightweight, Durable

CONS: None

BEST USES: Upgrade, Road Biking

These tires are great. They seem to last forever. I cannot remember the last time I had a flat with one.

PROS: Durable

CONS: None

Have four seasons as a winter tire, got these for the summer. Hope they are as puncture resistant as the four seasons. Certainly fast and grippy.

PROS: Easy To Install

BEST USES: Racing, Road Biking

Great solid tires, nice traction on the tire as well.

PROS: Durable

Very fast , just one flat in 8 month. I recomended for raicing and for every day ride

Not much mileage yet on this rubber. I wanted the lightest, most durable, best-riding tire I could find without spending a fortune. Everyone I spoke with, every review I read pointed at this model Continental. In thke few miles I've put on them so far on the funky streets of LA (almost as bad as NYC), they seem to be the "ticket".

PROS: Attractive Design, Comfortable, Durable

BEST USES: Casual Riding, Upgrade, Road Biking

Expensive, but Jenson gave me a great deal!

PROS: Easy To Install, Durable, Lightweight

Anytime you can get Continental Grand prix 4000 s ll for $30, stock up!

I have used these in the past but I got a deal on a set of specialized tires so I switched. The turbo tire fromSpecialized was a rougher ride and just wasn't as fast as the continental. After having a blowout on the turbo I decided to go back to continental.. I'm glad I did. Corners well and is slick.

Fast

I live in Northern California and shipping from Jenson has always been nearly next day or two day, and mostly free of the purchase price qualifies. My customer service experience has been above excellent as well on prior purchases.

Arrived in good condition in retail packaging.

Arrived on time. The only negative in the process is that the credit card I used for purchase was compromised. Can't say for sure that it was on Jenson's end or at all related but, circumstantially, I only use that card with known, long time retailers; and it's a small group. Raised the concern and asked about security through Jenson's Facebook customer service. Message was seen but no one bothered to reply. That's the part I really don't like.

I've been using 4000s for years. They handle the rough roads of my area well and are surprisingly durable for a fairly lightweight tire. I am about 190lbs and run about 85-90 pounds in the 25mm tires - comfy ride.

Smooth, Fast, and Grippy. No real downsides to this tire. If your frame can fit them, try them.