I have had them on my 2DR since day 2. On my second set and have nothing bad to say about them. I would say I got about 25K miles before they got to the point where they became really loud. I have 30K on them now and they need replacing. I also never rotating them so they would have probably gone a bit further.
Also Hankook makes (did at least) a tire very similiar you might check into to see if there are any deals.