These tubes are heavier than the standard Michelin tubes I'd been using on my Jamis Supernova with Clement Xplor Ush tires, but they don't feel as heavy or 'weighty' as the Kenda Thornproofs I used for a while on my Miyata 610 with Gatorskins. The Kendas felt like they were partially filled with sand, but these Continentals roll just fine. Glad for the upgrade at a reasonable price. One star withheld because the tubes're new and who knows how they will hold up over time.
This tube works great for cross or adventure bikes with wide tires 32-42 mm. The tube is supple enough but it also thicker rubber than a road tube as it should be. I have been running these on 2 cross bikes and have not had any issues.
the tube itself is a little on the heavy side but considering I make it heavier by squirting an oz of stans in it i feel i shouldn't complain. being able to remove the valve core and add sealant was the my whole reason for getting this tube and it has held up well. no flats yet and that with running through a goat head patch.
It's difficult to get too excited about a bike tube but this tube is nicely constructed and has an extended threaded stem. It works perfectly with my fatty Gatorskins and I'm pretty confident the only time I'll see them again is when my tires wear out.
The tube developed leak at the seam several miles into new ride. Checked the item, it has a leak at the seam where the radial and axial seams meet. Even though I realize that problems happen, this seems to be a design issue and might happen fairly often. I used the tune less than an hour. Is there any type of warranty? This is disappointing. I might go back to my old Tufo's.
I use them on my cross bike for winter training and on local trails. They aren't super light, but you don't really want thin tubes when they are designed to take abuse.
Conti generally makes tough products, if not always the lightest. This tube follows in that mold, as it's thicker than a regular tube, but I've also been able to get away with considerable abuse, running as low as 25 psi on some courses without damage.
These are thick and very well made ... the quality shows. I got these specifically for the removable valve core so I can add Stan's sealant. So far they have worked very well for cyclocross racing - no flats from thornsgoatheads or pinch flats. The advantage of the removable valve cores to add sealant provides added protection that's worth the extra cost.