Continental Grand Prix 4000 Black Chili Compound Road Race Tyre

Product Information

Lazer Grip: To make you one with the road, The lasered micro profile structure expands over the tire’s shoulder and provides outstanding cornering. All tests were performed with the same wheel, tire, load, speed, and air pressures on the same day. Weight is within +/- 10 grams of manufacturer specifications for all tires. With the 23C being spot on, 25C being 10 grams lighter and the 28C The tubeless GP 5000 is available in 25, 28 and 32mm widths, plus a 28mm wide 650B version. Our samples of the 25mm versions weighed an average of 302g each; we've seen reliable reports of 295g samples too. That's heavier than some comparable tubeless-ready tyres (a 25mm Schwalbe Pro One weighs about 255g) because Continental has gone for a fully tubeless construction with an airtight rubber layer on the inside. What sets the GP's apart from other race tyres, which also offer impeccable grip, is the incorporation of the Vectran Breaker.

I'm not sure at what kind of speed this turnover point would be. This also depends greatly on the tire/wheel combo. On a rough drum — which we used to emulate normal road conditions, the differences were even smaller. The Conti was measured at 32w at 40kph, dead in the center of the tires tested that ranged from 29.9w (Pro One) up to 36.1 (Clement LCV). Puncture Force Sharp Needle: Pre-2021, this score was known as 'Puncture Resistance'. On some tires with weakly bonded casing wires, the sharp needle can split the casing wires resulting in a lower score. Because the GP4000S II is one of the most popular road bike tires and is available in different sizes (20C is available as well), At the end of 2018 the big news in Continental tyres was the introduction of a successor to the Grand Prix 4000 S II, unsurprisingly named the Grand Prix 5000. Not only did Continental replace arguably the most successful clincher tyre of all time, but they finally produced a tubeless version.But the Continental was only about 1.5 watts slower than most of the other 25mm tires on a perfectly smooth drum, at a 24.5w cost at 40kph compared to most of the other fast tires that were about 23w. Keep this in mind when you're comparing, but I don't think anyone is going to use 120 psi in a 28C tire anyway. and models as accurately as possible. Comparing a 20C tire with a 28C from another brand doesn't give any useful data in my opinion. In theory that means sealant isn't required, but Continental recommend you use 30-60ml of sealant to protect against punctures. Everything else being equal that extra layer also means increased rolling resistance, but it seems everything else is far from equal. According to Jarno Bierman at bicyclerollingresistance.com, the tubeless GP 5000 has very low rolling resistance, second only to the Vittoria Corsa Speed Open TLR, which has thinner tread.

NOTE: As of 2021, we've improved the puncture resistance tests and now provide 'Total Puncture Score' as the main puncture resistance indicator. If the text below mentions puncture resistance, we're referring to 'Puncture Force Sharp Needle' which was our original test.

Latest Comments

Grand Prix 5000 AS TR is a new all-season GP5000, adding some extra protection, grip and longevity to the fast GP5000 road tyre lineup. Even though this is the heavier of the two new GP5000 tyres, it is perhaps more exciting for those who enjoy a little speed boost in everyday conditions and not while racing. While the GP TL was better than many previous tubeless tyres for ease of fitting, there were still rims it didn't quite fit easily. We've found the GP S TR is better still, but you might still run into not-quite-compatible combinations. Sorry but for far too many people who have ridden the GP4S this is a complete contrast to their experiences including mine. The tyres feel dead/unresponsive and sluggish, you do not keep your "summer speed" at all as they feel really draggy, they might have some additional grip in the wet but whatever micro improvement over x tyre I couldn't tell but having some unmeasurable extra grip at the expense of how they are much less a quality ride and lower performance (over Giant P-SL2s in 28mm) would simply not be worth it at all. With regards to grip, the Conti sits in the middle of the field. Like the Schwalbe, it provides good control at the limit and a predictable grip threshold. The sidewalls are relatively stiff and can sometimes cause the tire to feel skittish on uneven surfaces. We ran the tire at 6.5 bar, which already feels plenty hard, so we strongly recommend keeping the pressure below that mark. However, according to Conti’s recommended pressure settings, that is already at the lower end of the scale.

I'll be comparing a 23C, 25C, and 28C Grand Prix 4000S II to see how weight, size, and rolling resistance compares across different sized road bike

Grand Prix 4000 tubular

Performance in the rolling resistance test is great. At an air pressure of 120 psi, rolling resistance is a low 12.2 watts, which is excellent for a Tour / Race type tire. Dropping air pressure to 100 psi results in a rolling resistance of 12.9 watts. Lowering air pressure even lower results in a rolling resistance of 13.7 watts at an air pressure of 80 psi.

This article has been partially replaced by our Continental Grand Prix 5000 23, 25, 28, 32 mm comparison. The newer Continental Grand Prix 5000 article is much more detailed and includes All that to say, you aren’t going to lose your local race because you have Grand Prix 4000 S II tires on your wheels.Sure, there are tyres that can boast a more supple rubber and lower rolling resistance that could save you 1.5watts - but these offer an almost-perfect ride quality coupled with a significantly reduced likelihood if spending time beside the road fixing punctures. All in all, I think the differences aren't that significant, in particular between the 23C and 25C tires. I'm looking forward to repeating this Off-course, what will be won in the rolling resistance department, will be lost in the aerodynamics department.