Discount just did mine Wednesday, I bought them there 1 year ago. They also re-balanced them and cleaned and applied tire-shine as well. My last set from them I ran over a nail and they fixed that for free and I didn't even buy the road hazard warranty, they are the only place I do business with now and for the future as well, lot's of companies talk about customer service, Discount backs it up IMO..Discount tire rotates (not balance) at no cost. They also repair/patch flats at no cost. They call it a community service. I'm in IL.
Except in (Southern?) California, where the similarly named Discount Tire Centers is a different company. Seems to be mainly America's Tire around me.By the way, Discount Tire and America's Tire are the same thing. I assume most people know that, but just in case.