I've never had any initial quality issues with my specialized tires. And I've been buying several new ones every spring for the past 4 years. Have they worn fast in some cases ? Yes. But no problems at all with new tires. Even the weighs have been very close to what they claim.I had it around 35 pounds and it drops to 15 overnight. I ran this on the rear of my full squish 29er around 28 lbs. I use Revo sealant which is the best I have tried. AS you can see in the pic I left the tire on its side. Funny thing is that it seeped on both the side down and side up sides?
Goes back to a comment I made on here some time ago where you need to buy 3 Specialized tires in order to find one good one. I have bought two of the exact same Specialized tire off the same store rack only to find that one will go on the rim by hand while the next needs three people each with a flat head screw driver in their hand. Turns out the "control" is short hand for "no quality control"