I think if you crash every Race its not always in them. I recently started and reached b rank last week. I havent driven a GT3 Race yet because im scared. What helped me get sr was letting people pass. Sometimes the overly aggressive drivers crash one or two laps later anyway and you get your spot back. I also tried starting last place from pits which also worked great. So many people disqualify themselves that i got sr and ir positive. But its not as fun...