Originally Posted by
Nagrom_
That's a manufacturing defect. Get in contact with Hutchinson, they will more than likely replace it without question.
+1
The problem with dual compound tires is that the outer compound is bonded on and is usually a softer (more compliant) compound with better grip better faster wear. These problem occurs because the softer, outer compound flexes differently than the less compliant inner layer it is bonded to. The end result is that, at the molecular level, the bonds slowly break over time and the softer compounds pulls away.
This is what you are seeing.
It's much harder to make a durable dual compound tire than most people think which is why several brands abandoned the idea in the 90's.