I'd grab 'em. Match them up with some 235/40R18's up front and you'd have a real nice set.

Keep in mind that this is strictly a summer tire and they've got a rather exotic ROTATIONAL tread pattern. Good ratings. Perfect for a Texan.

EDIT: HOLD ON - I don't see that Goodyear makes GS-D3 in 275/35R19. Have the seller double check. If these are a discontinued size, AND A ROTATIONAL PAIR, fine. At nearly $300/ea. list, it'd be a good half price deal. Just be aware.