As a long-standing customer, I ordered a set of Pirelli Diablo Rosso IV tires because your website said they were "in stock". To my surprise, they were shipped and received separately but the larger issue is that the rear tire is dated 4423 (which is fine) but the front tire is dated 3421, already two+ years old. This might not seem an issue to you, but for a frequent Dragon twisty rider, it IS an issue when my butt is on the line at a 50+ degree lean.