MICHELIN Avenir Smooth Presta 60mm Valve Tube (700 X 18-23C)

Well it goes without saying that when you buy something manufactured in China you are not only taking a risk with your health but also your time and money. I only bought these because they were the right stem height and amazon prime eligible. These tubes are garbage. Don't even worry about cost of tubes because you just want something that will work and last you. For $4 more, you can get a decent Vittoria tube. The problem with both of the tubes I ordered was that they inflated incorrectly. When I had installed the tube and inflated the tire, I noticed the area around the valve stem literally bulging and pushing out the tire from the rim. I thought maybe the inner tube was folded or pinched and didn't allow for airflow. Removed, reinstalled several times before just pumpin air into the tube off of the rim. I immediately noticed that even not on the rim the tube itself was bulging near the valve stem. And that was only with 40 PSI. I need 120 for my road tires- these are road bicycle tubes! If I noticed the bulge at 110 PSI, I wouldn't care because they are a good price, but this was ridiculous. I tried with the second box that I ordered, and same issue. This tube is made in china, even though the majority of tubes are. But perhaps this is a knockoff brand made in a factory that produces other goods. Some companies that manufacture in China have their own plants which ensure better quality control, others like Avenir probably save money further by having their product made in a shared factory with no real need for quality control. But that's more into business than this review should be. Just do yourself a favor and stay away from this trash. OH! And on the box and tube, they both claim "Low Lead." How nice. Cuz we all want that in our bodies...Just stay away from this product. If you insist on buying it, buy a quantity of 10 and return the 7 that will not work for you- if your even that lucky.

I purchased several of these over the last several weeks, they are just awful, I have a road bike and a time trial bike, different rims, one has aluminum and one with carbon fibre. So far out of the 4 tubes I purchased, I've had 3 flats with the latest one being last evening. The defect with these tubes is where the stem meets the tube and the interaction with the opening in the rim. It usually goes like this, replace the tube, inflate the tube, everything is fine, next time to go to add more air, your going to get a flat, either immediately or 2-3 miles down the road. I tried fully deflating the tube before adding air, no luck, so if you want to learn how to change flats and how to burn through tubes and co cartridges then these are the tubes for you! These might be ok if you never add air to your tires, I've never been able to do that.

I ride 120+ miles per week, sometimes more. I bought my last tube in September and am buying some more for backup for some longer rides I'm about to do. Love the long valves, easier to pump up.Updating after 7 months of usage... recently these have begun to pop more often and I'm going to switch to Michelin or Fuji to give them a try. Moving from 5 to 4 stars for now.

Perfect for the new tire I bought. Downside is that the valve stem didn't have the threads with the nut to prevent the stem from sinking into the rim when trying to attach the air pump. Made it work though. Yes, I should've noticed the lack of threading from looking at the product pictures, but I couldn't pass it up based on the low price. A tube is a tube. Gotta improvise somehow.

Every one of these came out of the box without any kind of holes or damage, which is less common than one would think. I like the non-threaded vavle as it makes installation into deep dish wheels a lot easier and they look nice. A little of the heavy side, but who are we kidding, so am I, and I'm not off winning and grand tours.

These tubes work well. I run them with puncture resistant Serfas Seca tires. I would prefer to have a threaded valve stem to hold it more tightly to the rim, however the smooth valve stem is fine once inflated. These tubes inflate easily and fit nicely into the tire and rim. So far no punctures and I am very happy with these tubes.

I have purchased 4 of these tubes. Two, I had no problems with. On the other two, I was not so lucky. One developed a pin hole leak for no obvious reason but I was able to patch it. The other, I never got a chance to use because of a split seam which could not be patched. This is the way it came directly out of the box. I plan on using other brands in the future. There seems to be a lack of quality control in the production of this product.

This tube does the job...has been on the bike for several months. My only issue is that the tube I replaced had a threaded valve with a nut to keep it in place on the rim...that makes it a little easier to attach the Presta pump. This tube did not have that feature.