We actually have some decent used tire places here in the South Richmond area. There's Waller's in Chester as well as others I can't remember the names of. I just get new tires when I need tires, but my mother in law had a Michelin go bad on her Cadillac, and they matched her with an exact used tire except it was almost new for treadwear. But as far as the OP's question (I know, I can get to rambling at times), I would say like the others said if the treadwear is similar, I don't see any major issues at all.