I've got Pilot Sport PS2's on my 330i, and I think they're excellent. No matter how hard I try, I can't make them slide. I'll get back to you on just how fast they wear down, though. A quick quesiton to anyone out there with these tires - I installed them a few weeks ago, but I couldn't find any indicator on the sidewall as to which way they are supposed to rotate. I definitely could tell the difference between the inside and outside of the tire, though. Could I have put them on backwards? Thanks.