Sorry that I've bruised your ego. Tires would not have even come up if I had not found them lacking compared to others I've owned. Manufacturers should not put cheap tires on cars. Many times I've said, "Brakes don't mean crap if the tires are not up to the job." That is only one aspect of tire quality but it at least implies that tires are the most important part of a vehicle, especially safety. Air bags and that are fine, but I certainly hope I never need them. Tires would be a big factor toward that.I really don't see why you're bitching. Should I be bitching at Dunlop because I only got 17,000 miles out of a tire with a treadwear rating greater han my GoodYear RSA's which got 30,000 miles? According to the goodyear store not all tires are made equal, and the treadwear is not an industry standard, it's standard against said manufacturer's own product line..
My point is that Firestone may say their tire is a "All Season" and GM may say it's a touring tire. Maybe GM doesn't want to have to classify each and every tire that they put on a car and just to make people who are as anal retentive as yourself happy. For all we know GM has 3 classifications Touring (cheap, low-end/low-performance), Sport (mid price, mid range/mid performance) and High Performance (expensive, high-end/high-performance).
I'm sorry but at this point, you're just looking for every little thing you can bitch about on your car.
As to your Dumlops, if the wear was the only complaint then you should be happy. Many really great tires do wear out early.
Perhaps you'd fit better in one of those forums where all have seduced themselves into believing everything about the car is perfect and the most important thing they can do is add as much bling as possible.