[CarJunkie]

My primary reason for considering a square setup is for tire wear, both for the street and for autocross/track.

Last year: I found that -2.8 front and -1.8 rear camber resulted in near perfect handling balance for autocross on stock wheels, running Bridgestone RE71r 255 front / 275 rear. I was also on stock suspension. Unfortunately, as the car is also a summer daily driver, I corded the fronts on the INNER tread when there was still at least 1-2mm above the wear bars in the outer tread, likely due to daily driving.

Fast forward to this year . . . same wheel and tire setup, lowered with Ohlins, adjusted camber to -2.4 front and -1.6 rear. The car is faster and handles better, but I am definitely giving up overall grip with that alignment. There is slightly more push at the limit. With the staggered setup, the car really likes 1 degree more camber up front, and would probably wear tires evenly if only used for autocross and track.

My planned cure:
I am going to get a set of Apex SM-10 18x10 ET25 and use dedicated autocross/track tires either 275/35 or 285/30. I plan to set the camber to -2.4 front and -2.0 rear with a square setup. That *should* retain some neutrality on a square autocross/track wheel tire set and will let me use a longer lasting and more comfortable street tire.