I think the tires are fine. If you hit the right pot hole, the sidewalls are getting pinched and hence compromised.I haven't had any issues with the Continentals but I also don't have enough miles on them to feel qualified to rate them on durability. What I do find strange is how expensive they are compared to what some say are superior tires.
As of this morning on Discount Tire for staggered 2015 5.0:
Continental Pro Contact TX F $308, R $323
Yokohama Advan Sport A/S F #184, R $222
Michelin Pilot Sport A/S 3 Plus F $235, R $252
Cannot see why I would not buy the Michelins or, at worst, Yokohamas to replace the more expensive Continentals after reading all these horror stories.
They are not defective, sort of like the old 10 speeds with the skinny tires. If the side walk gaps or cracks were too big it was a sure flat tire, then the mountain bike revolution started, except for the pros, and flat tires were not a thing on bikes.
The low profile tires are like going from mountain bikes back to the old 10 speeds.