Continental Grand Prix 5000 Bike Tire – 2 Pack

These tires puncture easily. Be careful running on too rough surfaces with too low of a tire pressure. Tire is also susceptible to broken glass or bottle on the road.Third puncture since installing these tires. Seems anything and everything can pass through the rolling surface.

This was an upgrade from regular Gatorskins (not hardshell) that I thought were tough. I did the research and read the reviews after a rock went through the GS center at about 500 miles. I’m used to NEVER getting a puncture with Specialized Armadillo tires, but I wanted to try something with better traction. These are good tires, but don’t get sucked up in the reviews. On my second ride with these got a flat. Some kind of small pin about 2cm long went straight through the center. Now I have to ride on my expensive tires booted and hope that it doesnt disintegrate due to the tiny hole that punched it. FWIW, they seem like decent tires that have plenty of stiffness due to the high TPI. I recommend them, but be warned that they’re not bulletproof.

Ok. If you’re new to tubeless, bare with me. I’m new to tubeless too. I’ve never been more frustrated in my life. I’ve bought these before and returned to my LBS. I’ve had two pros attempt to install and walked out hours later utterly defeated. My hands are sore and my four year old sons vocabulary is a little broader now?. I gave up. Then it happened. These tires are really tight…. impossible to mount. I’ve put them on my old wheels with tubes and inflated to 120psi. They sit overnite or a day. Install them in the right direction. Then ride them a little. Theyll loosen/warmup. They will be tight coming off too. I’m mounting these on Mavic Cosmic Pro UST(2019). It’s a labor. I’ll get back with a review of other features soon. If you’ve ever ridden tubular you know the setup can take a cpl days. Think of this kind of like that setup. Patience. Don’t use levers unless you have to. Careful with the rim tape. Use the center channel if you hav

Before going tubeless about 5 years ago, I only rode GP4000/s. The main difficulty with running tubeless for me has been finding a consistently dependable tire with adequate ride/handling. When I heard that not only was Conti coming out with the 5000 series, but also that there would be a tubeless version, I knew that in my repeated sacrificing of tubeless tires and letting of orange glittery blood, I had finally found favor with the bike gods.Have been riding these for about 150 miles so far, so really can only comment on installation and ride. Durability and handling will require more miles to judge properly.They were more difficult to mount on the rim than the various Hutchinson models I’ve used in the past, but of course your experience will vary depending on what rim you’re using. Once mounted, the bead set easily and was air-tight even before adding sealant.The ride is nice, similar to the GP4000S I suppose (I haven’t ridden with tubes in a while now so it

I surmise that the Germany Volkswagen engineers associated with the VW emissions cheating scandal, after their dismissal, were rather immediately hired by Continental in their cycling tires department, tasked with the job of improving upon the GP4000SII tires so as to make them faster, more aero, lighter, etc. I suspect that, true to form, after an hour or so, they decided to just change the labeling of the tires: 25mm tires were now called 28s; and so on. Task accomplished; and wind tunnel, weight scale approved.The sz 28 GP4000s measured 28-29 upon install on my (~18.5mm int, 25mm ext) wheelset, at 60psi. At that volume, 60psi is appropriate (and produces a wondrously smooth yet efficient and safe ride). The sz 28 GP5000s measure slightly under 25 upon install, on the same wheelset, at the same pressure. At 60psi, the rear wheel (upon which the tire was installed, with a GP4000 remaining on the front) was unsettlingly ‘hoppy,’ cornering/turning felt downright dangerous, and I found myself frequently glancing to see if I had a flat tire. At 85psi (and no less), the issue abated – and the ride was like that of a 25mm(-) tire.THIS IS NOT A 28MM TIRE. A CO2 cartridge would yield a slightly underfilled GP4000 tire; the same cartridge would produce a hard/overfilled GP5000 tire. The difference in air volume – and, therefore, required/optimal tire pressure – is substantial. 95psi is the recommended tire pressure, with a max up to 110.So who should buy a GP5000 sized 28mm tire? Certainly not anyone desiring the better ride quality of a 28mm tire; this tire certainly doesn’t produce that! The difference is dramatic. Certainly not any semi-pro (or above) rider, who will still favor (as-labeled) 25s. Certainly not the price-sensitive customer in search of a deal: the as-sold price of this item is generally ~50% greater than that of most others in its competitive set. Who will buy it? Certainly those who purchased (and liked) its predecessor, only to be disappointed with the ‘bait and switch.’ One could/should perhaps purchase the 32mm tire, under the presumption that it is really their old 28mm tire (relabeled by the VW engineers). I will wait for another rider to perform that experiment before funding yet another round of drinks for the Conti engineers who have presumably been at the bar since finishing their hour of work redesigning (relabeling) this product.If the VW-turned-Conti engineers eventually move on, one can only hope that it is not to the German airline industry. If so, and perhaps as a precaution, I’d consider avoiding Lufthansa for a while.