Review on 🚲 TAC 9 Bicycle Inner Tube, 700c x 28-35 (27 x 1-1/8-1-1/4) Regular Schrader Valve, 32mm (ISO/ETRTO 622/630) - One or Two Pack Bundle: Choose the Perfect Option for Your Bike! by Ben Barrington

I installed a TAC 9 tube on a Trek Verve 2 bike and just a few hours after riding about a mile, I had a tear near the valve stem. The rim was fitted with new high-end Velox rim tape and I was surprised and disappointed that such a failure could occur. I attributed it to bad luck and hung up on the second phone. The same thing happened. The hose broke after just a few hours and a short ride. These failures were NOT due to punctures, but to a ruptured inner tube on the rim side. Inflation was at the correct 60psi, so it wasn't due to excessive inflation. I bought them in a pack of two so it may have been a manufacturing error. I would stay away from these TAC 9 inner tubes unless you want to be stranded and prepare for a long bike ride home with a flat tire. . Absolute rubbish. Edit 04/29/2019: I installed a Bontrager branded tube and had no problems with the return. It cost a little more but was available locally and the rubber was noticeably thicker than the fancy TAC9 hoses.