The inner tube exploded in from of my face at 55 psi. I had always used 55 psi for my previous tube for about 1 year, when I replaced it after 2-3 mins of pump this new inner tube exploded. I have not found limits of pressure in the description, but it doesn't look fine

Ik had nog nooit zo'n waardeloos ventiel gezien! Gelukkig had mijn buurman gereedschap om hem op te pompen

Binnenband vervangen, netjes opgepompt. Kom volgende ochtend bij mijn fiets aan band leeg. Binnenband geïnspecteerd blijkt bij het ventiel een lek te zitten. Onmogelijk om te repareren

Gewoon goed, precies wat ik verwacht.

bien mais ne correspond pas à mes rouesJ'aurais dû être plus attentifs en passant la commande

Dobra jakość za niewielkie pieniądze

Hervorragender Service und tolle Qualität Ich bin absolut begeistert von Produkt

The tubes are well made especially around the valve stem area where they are bonded to the tube, I have had zero problems and they hold the pressure as you would expect.At first after reading some reviews I can understand why some would be hesitant about these tubes, kind of got me wondering anyway.All I can say is from my experience Continental makes good products, sure I don't like the fact these are manufactured in China and perhaps that can lead to quality issues, it happens occasionally, but when some say every single one was no good there is definitely something else going on.Most likely reason could be some people don't have a clue how to properly put a tube in, cause there is no way they are reviewing the product I bought as well as others that have given honest positive reviews.Or maybe review Trolls, does happen on Amazon.Anyway, one issue I have read is people have problems with the valve stems breaking and the tube tearing, I have never as long as I have been cycling have had that happen with any tube and I have changed a lot.Simple rule Do Not tighten the nut keep it loose when inflating or re-inflating, then re-tighten. It is just to prevent the stem from getting pushed into the tire which as you know is a nuisance with Schrader valves.If it is to tight while inflating you can possibly crack the stem and or rip the tube.Yes I would recommend these tubes

Ordinate (due) di domenica pomeriggio, sono arrivate lunedì alle ~11:30: meno di 24 ore nonostante fosse domenica! (e che io non viva a Milano)Ne ho appena installata una senza alcun problema, e posso confermare che hanno la valvola Schrader, la stessa di auto, moto, e mezzi pesanti, quindi le si può gonfiare ovunque senza alcun adattatore, ed è possibile avere una lettura precisa della pressione mentre lo si fa.Per 3.55EUR sono ottime!