42/40 psi should be OK

If it is raked down at the front then lower the rear on the PSS9's Get as much negative in front as you can. Have you done the Whiteline roll center fix in the front ? If you haven't try that. If you cant due to the class you run in, then raise the front up 1 inch with the pss 9's height adjustment. if your rear sway is adjustable go slightly stiffer but know that will take away grip at the rear.

Lots of people like the Rs-3 but they are known to have a lightly softer sidewall. I actually prefer the star specs in 255-40-17 as they have a slightly stiffer sidewall. Are you limited to 245 width?

Also have you done the plate re-arrangement on the rear diff ( legal ) or re-flashed the ACD ECu SHHHHH .. the acd mod may get the car to rotate better trailing throttle and mid turn. This will take some of the weight off the fronts and allow you to point the car better. Rear diff mod along with non diaqueen (redline maybe ) will allow the rear end to swing out slightly easier under throttle ( slight oversteer ) Both will help take the weight off the front end.

l8r

 

Thanks guys!

I guess no rolling on the fronts it is! I wish I could replace the fenders or pull/fender mod them but sadly no go in my class. RCA's are out as well =/. I will try to raise the front and lower the rear, just need to figure out how to do so on these PSS9's which I know can do it. On my previous setup it was super easy to do. I'll make those changes hopefully this week, thankfully 2 weeks before the next event! I'll also make note and try out those higher pressures.

As for the rear diff, I have done the restack and love it =).