Originally Posted by
urbanknight
If the three tires were the same model bought at the same time, it's possibly that they came from the same defective lot. But yeah, probably much more likely something else like mounting or the rim.
only two had the cut but two or more had humps. one had a big blister where the layers separated. the 4th one would not seal it leaked at the bead and would only hold air for a short time. the pics show the bead how rough it is