Originally Posted by Scotian Bred
Max out all Performance Points on a car. 10
Performance points are earned by coming in 1st, 2nd or 3rd place in a career race. You get 1 point for each amateur cup race, 2 for the pro cup races, and 3 for each paramount cup race. If you are a good driver you should have your car maxed out near the end of the Amateur Cup.
I don't know how accurate this is. I just finished 19th in a race and was still awarded 3 performance points.