OK, now with some basic background information gained from testing, let’s get practical and work on just how to choose the ideal aero settings. First, we have to choose a reasonable starting point, and then we need to understand the cause and effect of adjustments.
To start, let’s hear what two really fast guys had to say recently in the iRacing Forum:
Ultimately you just have to test and see what is faster, but glancing at the schedule, Laguna Seca will be full downforce, so will Donington. Silverstone, Canadian Tire and Road America may slightly reduced.”
----Fredy Eugster (iRating=8011)