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+--- Thread: Deformed tire tube causing my fat tire 26x4 to pop (/showthread.php?tid=31)
Deformed tire tube causing my fat tire 26x4 to pop - Ridersonthestorm - September 9, 2025
So my brother picked up this tube on Amazon for 26 x 4 fat tire. I put it in, started to pump it up, and out of a sudden - one side just popped out. This was after I was reaching between 15 to 20psi. Thinking that maybe the tire is somehow deformed, as it was shipped compressed and folded, or that perhaps something did not align, I tried again - same thing!! Upon close inspection - below in pictures is what I discovered. I performed round 3 just for the pictures. It turns out the actual tube was deformed. That can be seen much more clearly after you pump up the tube only.
THE CULPRIT:
fat on the right, skinny on the left
I have been changing tires for over 15 years (2 years on fat tires) and never in my life have I seen a deformed tube. Just thought I would share.
RE: Deformed tire tube causing my fat tire 26x4 to pop - galaxymorph - October 2, 2025
Looks like this tube has a manufacturing defect caused by uneven rubber distribution or a molding issue during production. What happens is that if the rubber didn’t flow evenly or the mold closed under uneven pressure, one section could cure much thicker than the rest.
return it!!!