I bought the Continental 1.752.5 MTB 26 tubes with the Presta valves to install with my Michelin Country Rock 26 1.75 tires that I bought at WesternBikeWorks. I store my bike in my home, but I haven't had to add air in the tires for 3 weeks and the pressure is still the same. With my old tubes, I had to add air weekly. These tubes have exceeded my expectations. Will buy again!
These tubes are made very well and I have not had any issues with them unlike other brands. It is really handy they come with a small nut to screw down around the value stem to help it in place. It is a big help when trying to inflate a tire.
Can't really review the tubes other than to say I received one that was defective and Western Bikeworks sent a new tube out right away. Excellent customer service. Looking forward to doing business again. Suspect that the tubes will work great. 5 stars for the bike shop....and if I don't edit the review at a later time, assume 5 stars for the tubes also.
These are quality inexpensive tubes. The valve stem is threaded all the way to the base and there is a nut that goes over the threads. This gives you the ability to secure the valve stem in place making installation incredibly easy.
Quality looked good, but one of the tubes I bought ended up having a tiny pinhole in it near the valve stem. Rode to our favorite restaurant the day after I installed it and had to walk to the bike home with a flat rear tire. Tire was perfectly fine, no holes...so just a freak happenstance I think.
I have over 300 miles on these tubes with no flats. I am using good flat resistant e- bike tires. There is minimal weekly air loss. Far surpass original bike tubes as well as other replacements.
Great tube well made and strong.
Valves are stainless and screw top (presta)
Sturdy. Rubber ring around valve stem to tube are strong and resist flex unlike other cheaper made tubes.