Comments about Quality Q-Tubes Presta Valve Tube:

Good pricing on this tube... I have used one before and held air for a long time and have used another and have some pin holes so air kept leaking.

I would say it's a "luck of the draw" tube.

Comments about Quality Q-Tubes Presta Valve Tube:

I used to think standard tubes were all the same, made from the same rubber and made the same way. Why spend more, when they would just puncture or pinch flat and you could just patch them up for cheap?

My tune changed after I had some tubes that developed slits near the base of the valve stem and couldn't be patched, and some had slow leaks from the start, forcing me to pump air into it before every ride. I couldn't find the leak, even using the underwater test; it just was covered with tiny bubbles that stuck to the tube. I was spending so much on tubes that it rivaled the amount I spent on gas for my car. It was so bad that I was willing to spend a lot to go tubeless.

Tubeless wasn't without faults. It was so unreliable that I carried a spare tube. JensonUSA recommended me these tubes, after lending an ear to listen to my frustrations. They said that I could unscrew the valve core and inject stan's sealant into the tube, if I wanted extra insurance against punctures. I had the Stan's already...

One day I put this tube in as a spare to ride home, after losing my tubeless tire's seal, and left it in. It, surprisingly, lasted *months*! My issues with flats pretty much became far more manageable with a simple switch to a reputable brand name tube.

I learned the hard way that tubes are not all the same and that these Q Tubes (repackaged Kenda tubes) are probably the cheapest and reliable tubes you can get. Buying tubes and cheaper and you are going into the zone of hit or miss tube quality.

Comments about Quality Q-Tubes Presta Valve Tube:

I have used these on the last two tube changes I have done. Many miles now, including a 150 mile one-day ride around Mt Rainier. No problems, easy to forget, and that is just the way tubes should be. Excellent value.

Comments about Quality Q-Tubes Presta Valve Tube:

I used these on my commuter bike all year and have yet to have a problem. I put a lot more weight on them daily than the 190+50lbs talked about in the one bad review.

Comments about Quality Q-Tubes Presta Valve Tube:

So I bought 4 of the Presta 35-42c for a 5 day tour. Maybe it was because my bike was loaded (50lbs + my 190lbs) but twice when I removed the valve cap to top up the air, the center of the presta ejected with ballistic force. I've never seen this happen. maybe it was the weight they were carrying, or maybe it was a bad batch. It happened once on the 2nd day of the tour, and again on the last day. If you're touring, I would probably avoid them.

Comments about Quality Q-Tubes Presta Valve Tube:

what can I say it is tubes. Unless you are racing professionally get the best price you can and ride on! These tubes fit the bill nicely.

Comments about Quality Q-Tubes Presta Valve Tube:

I tried this tube because I had been popping tubes on trails due to high pressure. These were able to take the extra air pressure and my 230 pounds.

Comments about Quality Q-Tubes Presta Valve Tube:

Happy with the tubes. Purchased 4, so far installed one. Threaded valve. Well packaged (individually boxed), valve size and weight are per spec. Competitive price. Quick delivery. Cannot comment on long-term longevity/durability.

Comments about Quality Q-Tubes Presta Valve Tube:

Great value for the price

Comments about Quality Q-Tubes Presta Valve Tube:

Tube is a fine quality tube but needs a removable core for slime addition. Description did not specify so it was a gamble and I lost. I'd buy them again if they HAD that added feature. Please add core "removable" or "non removable" for the presta valves in future product descriptions.