I may be drinking the adversine koolaid, but the pr2's/pr3's are the premier tire in the 17's IMHO. I have the 170/60 rear and like the extra pickup, although I haven't tried the 160. I started on roadsmarts and they were crap with extra suck after 2k miles. I'm stubborn so I rode them to 6500 rear, 10k front. I have a PR2 on the rear and a PR3 on the front because that was what was available when I needed them. They are supposed to be good to 15k as well. I'm at 6K on the rear, and I'm just barely starting to notice that maybe there is a little flattening of the center, visually. So I think that may bear out.