18x5.5 Tubes

[mshac]

Originally Posted by JimC

We have a new theory from another board, and it fits the facts:

The tube & tire are new. The tire may have come with 3 rectangular stickers on the inside that the A&P removed. The adhesive residue remained. The adhesive is corrosive to the tube rubber but not the tire rubber. That's why they're all the same shape.

A poster on another board said that my failures looked liked ones he had that he was able to conclusively track to stickers on the inside of the tire.

Your theory makes perfect sense. I was wondering why the failed areas were so symmetrical.

I guess the take-away is leave the stickers on inside the tires, or remove them and thoroughly clean any residue with Goof-Off or such!