2/4 Pack Ridenow TPU Inner Tubes 700 x 18-32c Bike Tubes with 45/65/85mm Presta Valve

I haven't ridden on these too long, so I can't speak for durability, but I'd expect it to be the same. That being said, I found installing these to be easier than standard butyl tubes because of their bright color and slippery material. With 25mm wide wheels (18mm internal) and 25mm tires they went on without any tire levers. Each wheel felt a noticeably lighter after installed, as did my spare kit, which also has more room now that the butyl tube has been replaced. I'm not going to say it made a crazy difference, but my bike feels a little more nimble and responsive now. I may be wrong here, but it seems like my bike is much quieter with these tubes installed. I've never heard anyone or read anything mention that with TPU tubes, but it was one of the first things I noticed. Edit: after a 60mi ride in the Tour de Houston, they survived the rough roads flawlessly. I had no punctures even though I had the tires aired down a little for the rain. It's hard to say, but they do seem like they roll easier than my old butyl tubes, especially when going around 20mph or faster. Strong, heavy pedal strokes seem to result in less "whoosh" noise and more towards acceleration.

They get holes like any other tubes when punctured but these things are so small you can carry multiple in the same space as a butyl tube.

These are nice for a time trial or race or group ride once in a while but not good enough for daily riding or training. They just do not hold air longer than 12 hours or so and after three or four rides every one developed a slow leak. I replaced my rim tape and made sure everything on the rim and tire was smooth but they still got slow leaks even though I was very careful to avoid pinch flats during installation. Michelin ultralight tubes do just fine. DO NOT USE A CO2 INFLATOR with these. The plastic valve stems will crack when cold.

Much lighter than butyl tubes and has lower rolling resistance. Another benefit is it takes much less space in saddle bag but be sure no sharp object pushing against it as TPU tube is quite thin. Had two TPU tubes in road bike for a full season (around 75psi with 28mm tires) and no punctures (usually only average 1-2 punctures each year) so far. They hold air as good as butyl tubes and I do check tire pressure before every ride.

They are exactly what you would expect from a tpu tube. Ride feels great. Will definitely look at buy again when time comes. I gave 4 stars for not including the patches as described. So a little miss leading but for the price still good.

They hold up very well. A little more care is necessary during installation to avoid a pinch flat. Also I found that it is a good idea to put some rim tape down first. Twice I installed tubes on rims with factory ready tubless strips. Both time flatted on strip side of tube. Took factory rim strips off and replaced with rim tape. Have not had any issues. They do lose air overnight. Usually a couple psi. Less loss than Latex though. These are my goto tubes.

Why did you pick this product vs others?: Half of the tubes failed. Valve core came out of one and the stem leaked at the tube on the other. Other two are going strong.

Setup my RAGBRAI bike with these to help avoid flats over the 450 mile ride. Success. No flats, no leaks and very little pressure drop each night over the weeks ride. Softer and faster ride were side benefits.

Manque autocollant à collé sur la jante pour les vibrations, vue sur la photos de vente sur Amazon.

These are a game changer if you ride tubes and clinchers. Super smooth ride, ridiculously small and light tubes and good puncture resistance. Certainly an alternative to going tubeless. 10/10

Impressive performance with respect to percentage of air held from day to day. Lightweight and easy to install.

I was skeptical, but decided to give this "new" technology a try. Wow, what a difference! You can feel the increased lightness and liveliness of the ride right away. It even made a noticeable difference on a 35 year old Italian steel racing bike. So far durability is not a problem, no flats. I have no issue with losing air overnight as some report. I am sold and will stick with these, but be sure to shop around, these are available from many online retailers....

Très fragile et peu durable. C’est bien comme chambre à air de secours car très faible encombrement mais je déconseille de le monter pour les sorties régulières