A:  Ask a driver and they always seem to want more aero and of course there are different philosophies on which to tune with first.  Being an aerodynamicist myself of course I am partial to aero tuning but even I recognize that drag is an unwanted result and tend to first get an aero balance and then work on the mechanical grip.  Once you have good mechanical grip and balance I then will work with various downforce levels to determine the appropriate amount of downforce.  When adjusting the mechanical side at a race weekend we generally tune the car with spring and shock adjustments and save the larger changes like rocker ratios for a test event as they are more lengthy and would require large changes to your general setup.  A race weekend is better to arrive as close to your final setup as you can and just tune the car.  Thank you for your interest and I hope I have answered your question.

Catherine Wallace