Quality, I see it in this product. I am a more light weight rider at less than 140lbs so saving a few ounces here and there does go a long way. I could feel a difference with these tubes over cheaper alternatives. I did not see or feel anything negative...these tubes are all good!
Like most, I appreciate good tubes when I get flats. It's rare but the only time I think about it. I like to have two because when I do flat, I tend to have another or two within a week. It's weird, always works out that way. I made a mistake on my order, a 650 instead of a 700, but Western sent me a 700 immediately without a question. They're great and reliable.
I used these tubes for many years. They are light (the most cost-effective way to take some grams off the bike) and reliable (I did not experience any more flats with these than with regular butyl tubes). I also like the smooth valve stems, which work better with the Silca pump heads. BUT , like many other cyclists, I have switched to 25mm tires, on wider rims, and may try 28mm next time I need tires. Michelin desperately needs to get with the program and release a 25-28mm version of this tube.
I use these tubes with Vredestein Fortezza Senso tires and generally have flat-free seasons. I ride 1000-2000 miles per year on rural upstate NY roads. I like these tubes because they are light weight and seem to hold up well.
This is possibly the worst piece of cycling equipment I have ever owned. Everyone of these tubes have leaked from the stem valve brand new out of the box. Save your money and buy a tube with more durable stem valve. Its no fun being stranding great distances from home because the stem valves in this product are faulty. Shame on Michelin for manufacturing such crap!!!
Needed long valve stem and lightweight tubes for a set of aero clincher wheels. These do the job well and fold small enough to fit easily into my seat bag. Valve stem is smooth so it does not chew up my pump head and valve core is removable.
No flats so far.
I changed two bikes from Kenda tubes to the Aircomp to get a lighter more supple tube. Running Pro4 Endurance tires with these so the tube is well protected. After just over 1,000 miles I have had no issues, even with tiny nicks starting to show in the tires, and some very rough riding on beaten roads and some gravel down in So Cal. They do feel better and getting rid of weight at the rim is certainly helpful.
I ride approx 2000 miles per year on mostly rural roads. I hate getting flats but sometimes ya hit some little piece of something and psssst...ugghhhh...l need I say more ?.... When i start the season with new tires and tubes these easily last the season. Been using Michelin Aircomps with Vredstein Fortezza TriComp tires for the past 5 or 6 years.