I still really like Discount Tire as a company, but am upset at this location after today's experience. I always buy tires with tread warranty, but I find out 18 months and 17k miles later when my tires are down to 2/32", that this location did not install the tires I thought I was getting. Same brand, but slightly different model with no tread warranty. I don't know if it was malicious, or a mistake, or laziness to not special order, but I'm out for an entire set of tires thanks to this location.
So still use DT, but try a different location or at least triple check everything is right. Same brand, same size, can vary and I wouldn't trust them to do it right.