My family has been going to discount tire for years now, we haven't had too many issues really.
They would not fix the rim leak on our impala, said they cleaned it but it still leaked. They kept pressuring buying all new rims. I fixed that thing myself at home with no tire machines or anything. Popped the bead with the weight of the car, scotch brite and some black rtv as bead sealer, and perfect since.
Oh and there were flakes of clear and corrosion on the rims, really?