When I try and run the car like you guys suggest, I will see how low I can set the rear tire pressure and still not have a wrinkle at rest, as a reference. Sound good? I just spotted Montes' suggestion, 6PSI. Will try that, hopefully no wrinkle at rest.
My next outing will be last weekend of this month, July 29 test day.

Last edited by gregsdart; 07/13/16 07:23 PM.

8..603 156 mph best, 2905 lbs 549, indy 572-13, alky