Tube exploded while filling!

enargins

1 mW
Joined
Aug 15, 2018
Messages
12
So, I put a brand new tube into my tire. Filled it up to about 20 psi. Checked the rim all around. Bead was securely in the rim on both sides. White stripe around tire was even to the rim all around. So then I continued to fill it with my electric pump.

My tires (Schwalbe Marathon Plus) have a max of 60 psi, which I always fill it to without problems. However, I was a little past 55 psi when I heard a loud "bang" and all the air gushed out.

Looking at the tube, it was torn open by about a foot on each side of the valve.

Any idea what could have caused it?

I will say that I was going to add sealant to it, but I couldn't get the valve core out. Even used a metal tool, rather than a plastic one. But the tool wouldn't go all the way down into the stem, like something was stuck in there. However, the tube was able to receive air, so I decided to fill it up and ride with it until I could get a new tube.

Puzzling.
 
rings a Bell . Happened to me too. Last time it was for Schwalbe 29 x 2.1 tire. This happens when using a bargin,thin, inner tube with - fits multiple size / width specs. Inflated just enough to hold its shape for installation, it was much smaller than the inside of the tire. Tube got stretched thinner when expanding to fill the tire. Split on the seam.
 
Yeah, that's probably what happened. Tire is 2.3"; tube was up to 2.15". Figured it wasn't a big difference. And used another of the same tube successfully before. But wasn't lucky this time.
 
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