Gag...assbags who want your money?
If you know someone there and are sure of the product and service you will receive than it's no different than anyone else. If you're just buying online or walking in off the street...just do a search and you'll read all the stories relating to trouble some of us have had with them. I had trouble with them many years ago in the El Cajon, CA store not related to tires. A guy I used to know bought ordered tires from them and a completely wrong set of tires and wheels showed up. Not even the right lug nut pattern on the wheels. He complained and they acted like it was exactly what he had ordered. Finally managed to get them to take them back at their expense and they sent him the correct tires...with no wheels...even though they charged him for tires mounted and balanced on wheels. They sent the wheels out and then tried to screw him out of refunding the mounting and balancing fees.
That said I knew a guy who worked there a while back and he treated me great the one deal I did with him. Doesn't work there now unfortunately.