The Continental Road Race tubes are a high quality product for road cycling both training and racing. I use them with my Continental Grand Prix 4000 S II tires. One of the best things about the tubes is that they come in a variety of stem lengths. I have two sets of deep rim carbon fiber wheels on my road bikes and being able to get the longer stem is a key feature of this product. The tubes are long lasting and are great when paired with almost any wheel tire combination you have. Highly recommended.
Appears to have identical high-quality when comparing to Conti race tubes made in Germany from a decade ago - the butyl, valves, fit, seam, etc. Great fit with 25mm Conti tire and standard Wolber rim. The missing yellow caps add a few seconds though.
I used to buy the cheapest tubes but after buying these a few years ago I never looked back. For my type of road riding (back country road), they hold up better than what I used in the past. I highly recommend these tubes over others.
These tubes always prove to be reliable and lightweight. I would recommend something thickerheftier for rough roads or serious commuting, but that's only because that use isn't really what these tubes are intended for.
I purchased the long stem tubes. The tubes are high quality and fit well into the well of the tire. The valve insert will come out if your pump grips it as mine did. I finally put an adapter on the valve stem and that seemed to do the trick - not ideal if you have to change a flat on the side of the road.
This is a super lightweight tube with really thin walls. I tore it on the install so I cannot review its durability if one were to succeed in installing it. I will say that I have installed plenty of other tubes without incident, so while it could have just been bad luck, I'm sure this was not the first time I've caught some of a tube with my tire lever. I won't be trying again with this tube.