I have been using these tubes for 3 years. I like them Alot. They are lighter than a regular butyl tube and hold air just fine. I check my tire pressure Everytime I ride but there have been a few time the sat overnight and they are fine for a couple days. Very pleased with my tube purchase and use.
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.
This is a case of you get what you pay for. The tubes are a bit more expensive than others but over the last ten years they have been uniformly good quality, and more supple than the heavier cheaper versions. I really like the smooth valve stems, they do not tear up my quick connect hose fitting, easy to pull it of quickly as I release the grip all in one motion without shredding the rubber seal.
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.
I have been riding the Michelin A1B1 AirComp tubes on all of my 700x23c tires ever since I first discovered them about 12 years ago. The initial selling point for me was the smooth stem. I top off my tires before every ride and the threaded stems were wearing out the rubber gasket in the head of my floor pump. Sometimes I almost couldn't disengage the pump head and had to apply so much pressure I was afraid I was damaging the valve stem. The smooth stem AirComp makes adding air a breeze (no pun intended).
The slight extra cost of the AirComp over other tubes is easily offset by the cost of pump head gaskets or, in one case, a whole new pump since I couldn't find a gasket.
I have also found the AirComp to be very durable. If all goes well and I don't get a puncture from the occasional glass or nail, a tube will easily last through 2 or more sets of tires. This comes out to 6,000 miles or more.