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Closing the loop, after massive hours of obsessive reading, I decided on the following:
225/45Z GT Radial Champiro SX2. Save the RS-4 as an incremental upgrade for next time.
6UL 17x8 +40mm
SPC Performance 81305 Camber Bolt in lower hole, stock lower bolt in upper hole.
-2 camber all around, 0 toe.
Today was my 1st day on track at Portland. One dry session, and different levels of wet the rest of the day.
On the dry, the car was fantastic. Night and day compared to the stock Primacy. Yes I know I am stating the obvious, but it was really awesome. In one session, I just wasn't able to find the limit of the tires, whereas with the Primacy, after 4 track days, I felt the tires were holding me back.
On the wet, I made the mistake of not letting enough air out. At 37psi, the rear has zero grip. I spun twice including going almost straight. Down to 32psi and it wasn't too bad. I still spun one more time, but that was while trying to find the limit.
Thanks everyone.
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