Michelin Airstop Bicycle Tubes, Butyl Rubber, Presta/Schrader/Regina/Wood, 26", 27.5", 27 x 1 1/4, 700c, 29", Road, Mountain, Gravel, Commuter, Hybrid Bicycle

I ride 16mi a day, work and fun. Just bought a Fuji Absolute 1.0 with Mavic OpenPro-105 hubs- 36 hole-3 over lace and 700x28 Ultra Gatorskins.Tubes were Kenda 700 x 28-32c Thorn Resistant with 105 psi the ride is a bit rough ( lots of rubber and not much flex). My back tube had a defect next to stem only one month old-300 mi. I sent a nice guy email 10/15/12 to Kenda with picture and they were very cool and sent me a new tube not Thorn Resistant there discontinued she said. In the meantime I bought a pair of AirStop and installed them at 108 psi for 700x28 Gators (95 psi) but they roll better and I'm 6' and 218 lb. I notice a much smoother controlled ride and turns are much deeper-fun- tires flex and has a better give like the Ultra GatorSkins was meant to, even at 105 psi. The stem and rubber seems well built and strong. Just now i pulled a goat head out...no leak :) I live in Albuquerque NM Green and Red Chile and damn-Goat Heads. No guarantees with flats..but I will enjoy the ride and carry co2 and a tube in my tool pack. Will patch if needed at home and order another set of AirStops. Hope this helps..enjoy the ride. Damn Goat Heads.. Not A expert, so i depend on reviews...keep it honest and simple.

So far these are excellent. I mounted one in my rear tire and have a few miles on it already, and just mounted the second tube on my front wheel. The quality of these tubes appears excellent as each unfolds evenly and was easy to install inside my tires. I'm running them in a set of 27 1/4x1" Panaracer Pasela Tourguard tires, and will update this review in the future to tell how this combination performs. These tubes also do a great job of holding air. I pumped up my tires to 115 psi 24 hours ago and just checked the pressure. No drop at all. Also, the label on the box says that these tubes can be used on both 700C and 27 1/4 wheels. I've used 700C tubes in my 27 1/4 wheels for a while with no adverse effects. The size difference is negligible, so these will work with both size wheels.

This is my comparison of the Continental Race 28 (42mm) and the Michelin Airstop A1 (52mm) both in 18-25 sizeBoth 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.

These are really good inner tubes. I ride my road bike about 30 miles a day and I'm a pretty heavy guy. I have bought cheap tubes thinking it would be okay but after going over any rocks or bumps causes cheap tubes to split at the seams on me. Not the Michelin tubes. You can instantly tell that these are quality made from a better grade of rubber. These lasted a good while and survived the dreaded Southern California goat heads a few times, but not completely.I take my road bike on some pretty rough city streets and these did a nice job. These tubes are really good.

Easy to install excellent tire great traction

These are great tubes at a decent price, just make sure you send them back if there is a leak. Summer heat either through leaving them out and unused, or through shipping, will make the rubber stick together and 'melt' it a little bit and cause leaks.UPDATE: The rubber quality isn't that good on them, and they need a nut to stabilize the valve; my valve mysteriously got two small pinch holes in them. I bought some continental tubes that have a nut and it stabilizes the tube while you pump it up. It also stabilizes it while you ride, because if a flat is gonna happen, it's gonna be a pinch flat and it's gonna happen at the valve. (which is what happened to me.) That is, unless you ride over sharp objects all of the time or something and you get punctures.

This is my second purchase of this item, I like them that much. A tube is a tube is a tube, but with high pressure tires, some tubes hold air better than others. These hold air well for a long time. I don't ride every day so it's nice to be able to get back on the road with only a few pumps after several days. I use 23mm tires and these are a perfect fit. I recommend this to any road bike rider. The Airstop comes in a larger size for 700c if you need it.

Hard to tell how good an inner tube is until it dies, but this one seems fine. Valve stem was cool brass color too, and not threaded all the way up which I like