Continental Grand Prix 4000 Black Chili Compound Road Race Tyre

Product Information

I've retested the same 25C GP4000S II I've tested in July 2014 for the 25C GP4000S II review. Results were within 0.5 watts, so I've used the data from 2014 to keep the 25C data consistent

Tell us what the product is for and who it's aimed at. What do the manufacturers say about it? How does that compare to your own feelings about it? Between finger and thumb, you can feel that the GP 4 Season is stiffer than a lighter summer tyre because of this extra protection, but for the casing Conti uses the same thread count at 330tpi (actually three layers of 110tpi) as it does in the GP 5000s. Compared to rival all-season tyres such as the Michelin Power All Season with its three layers of 60pti, it is much more supple. PerformanceContinental's not saying exactly what wizardry of rubber formulations and carcass construction has been wrought to achieve this, but it's impressive as hell, especially when you consider that the improvement over the clincher version of the GP 5000 is 17% — Conti only claims 5% — and the tubeless GP 5000 therefore has over 30% less rolling resistance than the GP 4000 S II. That makes it the fastest Continental tyre yet. They're "variable" when fitting them too, some are so tight you wouldn't want to risk using them on a ride because the idea of sitting at the roadside in 5 degrees and rain attempting to get the thing off the rim is just too awful to contemplate. 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.

even bigger. At a comfortable 80 psi, you're only giving up 2-3 watts for a pair of tires when going for the 28C size. That's good The GP4000 was never a high end road racing tyre, because it was a clincher, and the pros all ran tubulars. It's only recently that the pros are moving over to tubeless, and it's only recently that Conti have made tubeless road tyres, so it's only recently that the GP5000 has become known as a top end race tyre. Before that, both were just brilliant, fast tyres for weekend warriers. Even though the 28C GP4000S has a maximum inflation pressure of 115 psi, measurements were taken at pressures of 120, 100, 80 and 60 psi. From a performance point of view, there’s little to fault with the Grand Prix 5000 AS TRs. They feel every bit as good as the standard S, but with the added protection to cope with poor road conditions. They’re very expensive, though, and with many other tyres on the market offering similar performance at a much cheaper price, the competition is tough. Verdict 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.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. 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. 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 However, a friend of mine has had no end of issues with punctures and poor quality so maybe it's a hit & miss thing? Which it shouldn't be, obviously.

The tyre does make my bike roll with a lot less effort and will continue the roll for some distance without power. With the AS TR, Continental has paired the speed of the Grand Prix 5000 and the longevity and protection of the Grand Prix 4 Season. The new tyre has a boosted tread pattern, multi-layer overlapping ply construction and additional sidewall protection - although from afar it looks very much like a "regular" GP5000. 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. The GP5000 boasts two new features: Lazer Grip texturing on the shoulder of the tread and Active Comfort Technology. Lazer Grip is a slight roughening of the tread intended to improve cornering grip, while Active Comfort is an elastomer embedded in the tyre to damp vibrations. Weight is within +/- 10 grams of manufacturer specifications for all tires. With the 23C being spot on, 25C being 10 grams lighter and the 28CBut this isn't a massive range expansion. There has been a TT version of the GP4000 or GP5000 for some time, so it makes sense to make a TR version of that. And then, why not a tougher version for those who want to go fast on less than ideal roads or compacted gravel that would/could result in punctures if running the standard version of the tyre. For riders who want to carry their summer speed through the winter without puncturing, these are the tyres for the job"

Sealant required. The GP 5000 TL has a layer of rubber on the inside to retain air; the GP 5000 S TR doesn't.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. to know when you decide to go for a bigger tire because you like a more comfortable ride or ride on bad roads with potholes a lot. 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