It's interesting that finishing above your "rank" should get you more points. I jumped into a race on a whim with no qualifying. If the rank and driver number are related, then I should be finishing 7 even though I started 19th. Thanks to all the all the penalty stuff, I actually finished 7th! For passing 12 A and B driver (all SR-S) I gained roughly 200 DR (sad trombone). Given the ease of losing DR, it hardly makes it worth the effort.