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  • Continental Grand Prix 4000 S II Tire - Clincher
  • Continental Grand Prix 4000 S II Tire - Clincher Detail
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ContinentalGrand Prix 4000 S II Tire - Clincher
Sale 47% Off$39.95 $74.95

Item # CON000B

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  • Black Chili: Vectan Breaker, 700c x 25mm ($39.95)
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Item # CON000B

Like the outgoing GP4000 S, Continental's Grand Prix 4000 S II Clincher Tire continues to use Black Chili, but now has Vectran technology to boost puncture protection. Vectran is a multi-fiber thermoplastic yarn that is made from a liquid crystal polymer.

Claimed to be stronger than steel, this offers additional resistance to penetration from road debris while being ultralight. Combined with Continental's Black Chili rubber compound, super-tiny carbon black particles incorporated into the rubber formula, the GP4000 S II is versatile enough for race wheels or training wheels.

The tiny size of Black Chili particles allows them to mold to variable road surfaces more readily. It gives the tire greater ability to conform to imperfections in the road surface for excellent grip in demanding situations—such as high speed cornering—while also reducing rolling resistance. Since the Black Chili particles are so small, more particles fit into the contact patch of the tire, reducing tire wear and increasing tire longevity.

  • The most popular racing tire we carry
  • Increased suppleness reduces rolling resistance
  • Unrivaled traction and road feel
  • Vectran technology reduces puncture risk
  • You know Conti's GP4000 tires are the best, and they know you know
Tech SpecsWeight
Tech Specs
Black Chili
700 x 23c
Recommended Use
road cycling
Manufacturer Warranty

Actual Weight

Actual weights are measured in-house by the Competitive Cyclist team.

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Black Chili: Vectan Breaker, 700c x 25mm

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~1000 Mile Usage Report

  • Familiarity: I've used it several times

1st pair of GP4000s. I've used them for roughly 1k miles now, from mountain climbs and descents to spirited suburban riding on relatively good pavement. These tires roll fast, are light for a training tire, and have held up against most road debris. The front tire punctured at 859 miles, and the rear tire punctured at 936 miles - both due to the infamous goathead thorns. In both cases, the thorns punctured well off the centerline of the tire - possibly bypassing the Vectran Breaker layer? No experience riding in significant wet conditions.

Note: not sure if it is just my experience, but these tires can be an absolute PITA to mount on my Mercury M1 disc alloy rims. Maybe I just need more practice...

Great tires!

  • Familiarity: I've used it several times

This is the 4th set of Conti GP's. I got 4,250 miles out of the last set and they were still useable, saving for spares. Previously, I had run 23mm, but after reading several articles, I went with 25mm this time. Big difference in terms of comfort. I ride in NJ farmland and there are many roads that are patched or should be patched, the 25's smoothed out the rough spots significantly. Also, my speed increased 1 mph on average, perhaps due to better grip of a new tire, but I've also read that the wider tires have a better rolling resistance. I bought them from Competitive Cyclist for $35 (each) which I consider a bargain. So far, I've put 400+ miles on the tires; very happy and highly recommend the tires and CC.

Not the same

  • Familiarity: I've put it through the wringer

I have a feeling they're not the same as my previous GP4000 from few years ago. Those were nicer, measured almost 27 mm on the same rim (these new 4000 measure 25 mm). Quality seems lower and I see more wear and cuts already. Maybe it's a bad batch or something but I don't like them as much.

Best overall Road Tire

  • Familiarity: I've put it through the wringer

In my opinion, after only riding with Bontrager R3's, I started riding these Conti's and I never have flats anymore and they grip well in all conditions. I think they are a little heavier but a great daily tire to ride and workout with.

Continue 4000S II

    I have used these tires for years and years, over thousands of miles, because of their reliability, durability, traction, and price.

    Tough to recommend after today.

    • Familiarity: I've used it several times

    I just mounted this tire today and went on my first ride. 15 miles in the bead and sidewall separated causing two flats. (I didn't notice the separation at first and just changed out the tube)

    Prior to today I have used these without incident for four years and love them. After reading the reviews here today it seems that this tire is now having a sidewall issue.

    Thank you for Competitive Cyclist's amazing Customer Service. They are exchanging the tire. I will give it one more chance.

    Tough to recommend after today.

    Great tire .

    • Familiarity: I've used it several times

    No tire is bulletproof but these are very tough . Hardly any rolling resistance and descent traction . Can’t beat sale price.

    Great tire .

    Adequate Grip but Weak Sidewall

    • Familiarity: I've used it several times

    Tires have good grip in corners and when its wet, but a weak sidewall. Crashed going down hill when my front wheel hit something metal in the road. Can't blame it entirely on the tire, but the side wall shredded instantly. Never seen a tire destroyed so easily. I had it inflated around 95 PSI and about 150 miles on it. I won't purchase again. For general all around summer tires I'll look elsewhere.

    Weak sidewall

    • Familiarity: I've used it several times

    These tires increased my confidence turning on corners, it grips the road. However I crashed going downhill due to sidewall blow out. It is a fairly new tire with at least 100 miles. It was inflated at 110 psi. Prior to buying this I had the same tire which I used but also has issues of having pinch flats when inflating at 90 psi. I never had an issue with pinch flat with my Bontrager tires which came standard with my bike.

    Are these tires being discontinued because they introducted the 5000 series tire? Just want to know, because then I plan to stock up on 4000's....

    Hi John, that's correct, these tires are being replaced by the Grand Prix 5000.

    Best road bike tires

      I've been buying Grand Prix 4000 tires for about 15 years. I regularly get 5,000 or more miles on these tires and rarely have flats. I purchased the most recent pair to replace tubeless tires that were on my new road bike. I had two flats with them in less than 6 months so I knew I had to replace them with my GP 4000's.

      Durable and Fast!

        I've spent the last 18 months on the 4000's and continue to rack up mileage and swap them out. I've had no issues with flats (amazingly) and have used these in many crit's and road races. These tires make for a stress free ride.

        Can anyone comment on the true width/height of these tires? That's the limiting factor for me; I tried mounting some Clement Strada 28mm - the frame (2015 Felt Z4) is more than wide enough, but the tires were just a tiny bit too *tall* to fit without rubbing. Internal width of my rims (Williams Carbon System 45) is 18.6mm [external 26mm] so I'm worried that will push up the height of any 28mm tire. I've also seen occasional comments that recent production runs of these run fairly wide, so maybe the 25mm will suffice. Maybe run 28 front 25 rear?

        I've saw in a review that the 25mm mounted on a 19mm wide rim ends up measuring out at 28mm. I run the 25s and they are great, plenty wide and cushy for me.

        I ran into the same problem with my Z4 -- 28 inch would fit on the front but not the back. The 25 inch fits the rear fine but the 28 is too (for lack of a better word) tall and rubs the frame.

        I find the contis to run taller than most tires, so if you're concerned about height go with the smaller size. I can fit 28c Rubinos on my bike but the 28c GPs rub the underside of the brake caliper.

        You can't go wrong

        • Familiarity: I've put it through the wringer

        Unless you're going to go tubeless, (and you probably should), you won't do better than the GP4000. I've observed that these last longer than almost any other race tire, and I haven't ever had a sidewall failure. I'll have to ride the new 5000 at some point, but the fact that you can pick these up for less than $35 makes them pretty tempting!

        Be sure to reach out to me directly at if you have any questions!

        4000 II S

        • Familiarity: I've put it through the wringer

        I admit they have a week sidewall, which has caused me a couple flats. However, I use 25’s and have used nothing else. My rear tire needs to be replaced. The dimples are completely gone and has lost the tire curve. I ride 500+ per month. This has set lasted me all season plus 4 metrics. I have no complaints about these tires at all. I had a sidewall blow out. I took it back to the LBS and it was replaced. Conti had a problem with that batch. Great tire.

        Had a sidewall blowout, too, in Oct 2015. LBS also replaced without hesitation and with an apology. Have had better luck since. Two flats with more than 10K miles riding over three years. Replace tires about every 2500 miles. Flat spots develop.

        Avg. ride time: 6h 12m per week
        • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

        Do the job....mostly

          They have great rolling resistance, however I went through 3 in just a month. I ride about 150-200 miles a month and I try to avoid as much debri as physically possible. But these suckers just can't handle much of any debri and I'm not the only one who has owned these in my group and has had the same problem.

          Used once but already dig 'em

          • Familiarity: I've used it once or twice and have initial impressions

          I got the 28 mm version and their real width is at least 30 mm, probably 32 mm if on wide rims. I have a BMC Gran Fondo with disc brakes and these tires juuuust fit. I've been using Gatorskins for years and years and I just may switch permanently to GPs. FYI, the 28 mm version of the GP4000 is definitely wider than the 28 mm Gatorskin. I have yet to take them on dirt/gravel.

          What have you noticed about height of the tires? That's the limiting factor for me; I tried mounting some Clement Strada 28mm - the frame was more than wide enough, but the tires were just a tiny bit too *tall* to fit without rubbing. Internal width of my rims is 18.6mm (external 26mm), so I'm worried that will push up the height of any 28mm tire.

          These tires rock!

          • Familiarity: I've put it through the wringer

          I discovered these tires a few years ago and now they are all I use (but I will be checking out the new 5000s). I ride a mixture of pavement & gravel and these things are durable (over 3000 miles on the rear tire), not prone to pinch flats and grip great.