For the ones that wonder :
The SR is calculated simply as your number of incidents per turns. It goes between 0 to 4.99
When you reach 4.0 and you completed thr minimum requirement for that class you are eligible to ' fast track' to the next class. Classes go Rookie D C B A. Pro is not realy a class it's a title.
Gaining SR is super easy when you are a rookie, gets painfull when you become B, A.
You can gain 0.05 with 12inc in rookie, but loose 0.3 inc with a x4 while A class.
So when you go banging doors with a bunch of ego maniacs in a 10 lap race that last 25 min, your SR gain even at low class level is painfull. Now if you race a F1 you'll race 50 min running gazzillions of turns, your SR will rise faster ... But you are of a higher class so the gain is tempered.
What you have to understand with iRacing, is that it tries to simulates the choices real race car drivers do ... Should I push it or try to keep what I have. Especially true in the higher license levels where championship points are on the line, that you are trying to keep your SR up to stay in the serie, and that you can only race a couple of times a week.
Way less turn 1 hero there. This is were iRacing shines I think. Pm me w ur name ill add u a a friend, so we can be in the same races. Ill even do some SS races 2i please the oval guys from time to time.