Pirelli P Zero™ SmarTUBE 23/32-622 700C Presta 60mm Single Pack - Enhanced Cycling Experience, Lightweight Design, Speed Boost, Customized Fit

These are fantastic ! Unlike butal tires that looses 20 psi every 24 hours. These just dont lose ANY AIR ! UTTERLY FANTASIC!.Now, I see people having trouble installing these. Well I come from a butal tube background that is slippery as all get out so I've learned how to install butal tubes and these aren't any differant. I DO NOT partially inflate. That my friends is bad advice. I also use corn starch to install tubes AND TIRES. They just slip on, well most of the time. DON'T INFLATE AND DON'T TWIST THE TUBES. For goodness sakes put the wheel on ur lap and install the tube & tire the easy way. And don't forget the corn starch. I actually have a dry paint brush that I use to "paint" the corn starch on the inside of the tire and I put corn starch in a zip lock bag and put the tubes inside and shake the heck out of it until the tube is coated with corn starch. Then and only then do I start my tire install. It usually slips on without any tools. WITHOUT ANY TOOLS!when I carry spare tubes with me on my rides they are wrapped in thier own corn starched zip lock bags ready to do their job when the time comes. Take ur time and do it right. It's a sucky job and u don't want to do it twice, or 3x if u really scew up (if u dont check the inside of the tire 4 sharp objects).Do this for yourself and avoid the aggravation when a flat takes place.USE CORN STARCH !I will buy more of these particularly for the rear wheel because these are almost 2 oz lighter. Less weight easier to turn over.One more thing, I use these on rim brake wheels without any problem. I know some poly tubes will melt if used on rim brakes due to excessive heat. but these tubes seems to handle warm to hot rims during excessive braking. I've use them I trust them I will buy more Pirelli tubes.

The installation process was easy enough. The bright yellow color makes it easy to see danger of getting caught between the bead of the tire and rim.I am not sure about performance as my rides have been on rough chip seal. I will know more when I get to ride on some "road candy," smooth asphalt.These tubes are lighter than latex but may not be as lively, as the material doesn't seem as supple. That would affect ride performance but also makes installing easier.

No joke, I have replaced many a tube on my bikes, thought I would try one of these out...Couldn't even get the thing up to 40 psi, and then discovered it developed a hole.There are no burrs in the rim or objects, nothing in my tread that could cause a puncture. Already replaced with a standard butyl tube... no problemsThese are flimsy, weak, and useless. You buy these your basically installing tissue paper in your tires, and it will probably last just that long as well.

Light weight - easy to install. Thus far durable (train and race with them). Only dislike is the plastic valve stem is "slick" and my shop pump head slips off before I reach full inflation. The pump I keep in my car must have a softer rubber in the head, as it does not.

I run my tires at about 80psi, and these hold air roughly twice as long as the other butyl tubes I've used. Given the time between punctures I'm willing to state that these are probably more puncture-resistant as well. The only punctures I've encountered with these tubes are a furniture staple (and nothing's surviving that), and a puncture so small that it wasn't visible even after I discovered where the air was escaping from. In both instances I did not notice I had a puncture until the following day since the punctures were small and didn't rip at all.Not sure how people are having difficulty installing these. They work the exact same as any other tube and you would have to be incredibly careless to wreck them on installation.My only complaint is the plastic valve stem material. A lot of people put electrical tape over the valve stems when they have carbon wheels to prevent rattling. If they had a rubberized or fiber coating (like modern automotive wheel well inserts) it would eliminate the need to do that and I would give it a 5 star rating.

Much, much lighter and faster rolling than traditional, butyl tubes. These may be excellent for racing purposes or on very clear pavement. This tube only lasted me a couple of short rides, some 50 miles in total, before it deflated slowly due to some minuscule puncture. So I would not recommend these for regular, urban use as they are too sensitive to all the random space junk found on city streets. They are light, they are fast, and would make excellent spares as they take very little space— but I will no longer rely on TPU tubes as both these and other brands I've tried have that same basic flaw.

These tubes were easy to install and looks great. My old tubes were 99g and these are 35g. Thanks for a great product.

I am now a convert from Butyel tubes, much lighter and smaller to carry. I am a convert.