I am planning on run a true street class this weekend. Car must be licensed and inspected, DOT tires and drive a 15-30 mile cruise with check points.

I have a set of ET Street Radial 325/50/15, but I have not ran them at the track for a few years. I bracket race with ET Drags and the car has been running 6.80s with 1.49 60' time. Car is around 3650 with driver, Calvert 90/10 shocks on front, Stange double adjustable on rear and Caltrac bars and springs.

I probably will only get one pass before my qualifying, so i am looking for a starting point for the tire pressure. Should i change the rear shock settings?