They are used advan ao48 tires and close to wear bars already so I got them super cheap, lol. Car is 99% stock. Just a mountune rear mount, a boomba bov spacer, and soon a green drop in filter. The rear pressures worked well on the courses I managed to hit last season. On an autocross the rear tires on a fwd do nothing but hold the car up. Having them super stiff from air pressure lets the inside rear slip easier if it's even touching the ground. At least that's my theory. Makes for easier lift throttle oversteer . And yes RT. It was me, ????
Just looking for experience from other autocrossers that have run very sticky tires.
TBH, there's 2 schools of thought on rear pressures for FWD cars.. High pressure lets them break away quicker, but when they start to slip, they snap out. On some chassis, that's a good thing(my old neon LOVED this). Lower pressure lets the tire work up until it slips away, then it breaks away more gradually.(the EF civics work better this way).
Last year on my friends car, we were 36-38ish front(depending on course, 16s or 17s, and ambient temps), and 45'ish rear. Then again, the car had konis and the titanium front bar.
For the r-compounds, I'd probably start at a level pressure(maybe stock door pressure plus 3-4) and see what the car likes. Depending on the heat cycling of the tires and the remaining compound life, that will determine dropping or adding.
If you feel like the car needs more rotation, maybe a rear beam brace and RSB are in order for you. That or a pair of konis in the back to stiffen things up may help as well.
Good luck this weekend. Id be running on sunday in MKE if it wasn't easter...