Continental 42mm Presta Valve Tube

I've tried a lot of bike tubes, and these are my favorite. They are sturdy and well made and I have not had any problems with them splitting at the seams or at the valves as I have had with some less expensive tubes. The presta cores are removable, unlike some other brands. This is a slight downside if you use a pump such as the Lezyne brand which screws on...over time you may pull out the valve core resulting in a big Whoosh! It's easy to screw back in using a valve core tool NoTubes Core Remover Tool , but some people don't want the hassle so they glue the cores in. I like them removable on the theory that if a valve core dies I can simply replace it with a new one (I have some spares as they are sold separately) without having to throw out the tube. This has not happened in years, but the thrifty in me likes the idea that I could.

Great tubes. Ordered 4 to install two in new tires and have two spares. Be sure to test before installing. One of my tubes had a puncture and I didn't know until after I installed. Just ordered another one. Trashed the punctured tube and forgot to return it. Good tubes to go with my continental 500 tires. Very smooth ride. Rides Benz kinda smooth!

This is my comparison of the Continental Race 28 (42mm) and the Michelin Airstop A1 (52mm) both in 18-25 size Both are nice products with actual confirmed weights of 97g, which are not the lightest but certainly not the heaviest on the market. According to my weigh-in, the Continental Race 28 comes in at 98g including the threaded ring (which weighs 1g) so all being equal they are the same weight (unless you're a total weight weenie) Michelin Airstop: Nice tire with non-removable valve cores and a smooth copper stem. The valve stem lengths are either 40mm or 52mm. Unfortunately the 40's get through a standard aero wheel (Mavic cosmic) but are still slightly short and the 52's are a bit on the long side, so I opted for the 52s (which came in at the same weight as conti's 42s). Seems that the physical tube is a bit snugger fitting in the tire around the valve stem than the continentals but overall no issue installing. Tire is also coated for easy installation. Continental Race 28: Removable core and threaded silver stem which, to me is a bit concerning as the cores frequently come out when unscrewing the pump (as many have pointed out) and despite locking them in tightly with a wrench, is less than mentally comforting when changing a flat on the side of the road. Valve stems are a nice length at 42mm for standard aero wheels and also comes in a 60mm which is a touch too long for standard aero wheels. Tire is not coated but installs easily. Overall they are both very nice tires with the primary difference being the valve stem. If you want a solid non-removeable core, go for the Michelin if you prefer removable threaded go for the Conti. Can't lose with either as both are reputable brands and the physical tires are nice in either case.

Good tubes. High quality and a good value for the price. The stem is high quality and doesn't bend easily like other brands. This is important to me if i need to fix a flat on a ride with a little hand pump. After reading some of the lower ratings for this product, I think there are a lot of people out there who do not know how to properly install a tube on a road tire or understand the importance of inflating to an appropriate pressure. The pressure rating on your tire isn't just a suggestion. If you under inflate you run the risk of getting a pinch flat eventually. If you pinch and pull the heck out of the tube or stem of the tube getting it in you probably gave yourself a flat before you even finished fixing the last one. watch a couple YouTube videos and read a bike maintenance guide, attend a clinic, or have an experienced cyclist teach you how.

I went through 3 tubes off of Amazon and had problems with all of them. One blew out on the seam. One had a valve failure. Only have had a few rides on these, but so far no issues. If I do I'll come back and update this review. So far though, great!

I bought two of these for my Schwinn road bike (700x25c wheels). I had been having problems with my rim tape, so I finally got that resolved. When I mounted these tubes and started inflating them, there were no pinches or twists in the tube or between the tube and tire, but the tube was not inflating evenly. I continued pumping until the tire was firm and consistent (I rolled it around on the bike a bit to level it out and set the tire bead in place before going past 20 psi) everything pumped up and seemed fine with the first one (on my front tire) and I set out for a ride with my rear tire pumped to about 90 psi (this was a bell tube I got from walmart) and the front was around 80 psi. The front tire wore flat within 5 miles. When I pulled it out I noticed that there was a ring opposite the valve stem. When properly inflated, the tube had a low spot because of the extra reinforcement around the valve stem area, causing the tube to bulge and rub against itself causing the flat. I noticed this on the other continental tube I had purchased and took it for a shorter ride and used lower pressure, hoping that would resolve the issue. At 50 psi, (keeping in mind the tires are rated for about 110 psi) the tube rubbed itself through in 1.7 miles. I will not be buying these tubes again. Perhaps if you have a mountain bike, their tubes are better at lower pressures, but the road bike tube that I used needed to be higher than 40 psi just to keep the tire from riding too low. You might also factor in that I'm a bigger guy at 230 lbs, but it was clear that the tube was either defective or poorly designed or marked.

Super.

alles o.k.

Good quality, fit to my kids 650 wiggins

Siempre me ha transmitido confianza esta marca, que en neumáticos de coche es de las más caras y con más prestigio y en este tipo de cámaras de bicicleta es de las más baratas, pero su marca es una garantía

Needed to replace a tube on the fly on the side of the road. Really good tube and no issues with it after 500km of riding.