ZDan

Actually, my "no problem" comment isn't totally true. When I first started tracking the car I ran the max US spec rear toe-in, and it accelerated rear tire wear to the point that I practically corded the rears over the course of 4 track days, and the car was well-nigh undriveable at that point. So I started running significantly less rear toe and got much more linear handling characteristics (expecting the opposite!) and VASTLY improved tire life.

Then a couple of years later, at Mont Tremblant (track in canada) I had MAJOR stability problems in torrential rain/standing water both on the track on track tires and on street tires on the way home. Come to find out the alignment had shifted from ~.3degrees total to over 1degree total! I have found that with the AP1 anyway, too much rear toe-in WILL make the car an evil, twitchy, nonlinear-handling bitch. Running MINIMAL rear toe, ~0.15 to 0.3 degrees TOTAL, completely cures the car of this behavior.

So to anyone who's AP1 is twitchy/unstable in low grip conditions, I say get the alignment checked and have the toe set to minimum spec or even below that.