I bought half a dozen of these near the beginning of the year. I have 3 road bikes and rarely have flats, so I figured this was probably at least a two year supply. I put the first one on in March with a new rear tire. It was good for a month, but developed a slow leak on the second half of a ride. I changed it out and was good for the ride home, But then 2 was flat when I pulled the bike out for next weeks ride. I changed it out and checked the leak when I got home and found a very small, like smaller than a pinhole on a seam. Next week, with tube 3 the very same thing happens, same kind of small leak on a seam. I'm think ok, that's like one in a million, these are very highly rated, couldn't happen again. This time with 4 I'm good the first week, good the second and third, then it fails on the fourth week. I say I'm done, put a different brand in and I'm fine until today. I have my first legitimate flat with blowout and obvious cut on the tire from debris. I change the tire and again try to have faith in this tube by putting 5 on Sunday morning, knowing I can change it before the ride next week if it's another slow leaker. Guess what? The valve to tube connection was bad and every pump went right straight out. I put a new Conti tube on and 6 went in the garbage can. I'm done with bargain tubes, just not worth the hassle.
Thank you for your feedback.
You have already submitted a vote for this review.