It doesn't matter which SR category you race in, there will always be people with a short fuse or just those who think GTS is a need for speed game and just ram anyone in front of them, from SR E->S.
I for one do not care about my SR or DR, because I know I achieved S/S during the closed beta and a week into the full game. Ever since that moment, when I get used as a brake in T1 and drop from 1st to last I just quit the race and head back into qualifying.
If I'm having a close clean race with any other driver, and a third driver decides to smash into my opponent -thereby taking out my opponent and ruining my race- I'll go off throttle and wait for the culprit, I'll slow him down -cleanly- and allow my opponent to catch back up to us. I've done this a countless amount of times now and the 'dirty' driver in question is always left baffled - even last night on Yamagiwa in the R32 I had a race just like this - I was in a sweet clean fight with the guy that started behind me, he was a tenth slower than my pole and was breathing down my exhaust around the entire track until the final lap a 3rd dude found it necessary to ram my 'clean opponent' in the slow hairpin at full speed -it happened right in front of my nose as I was taking the outside line, my clean opponent on the inside line, as I turn i could see the dirty guy ram
the guy I was dueling with into the wall - we had a 10second lead on p4 - I was not impacted by this kamikaze move and was able to take my corner without losing time but I went off throttle because I noticed the dirty guy had taken p2 in my rear view.
Going into the final chicane before the final hairpin, I went through the chicane about 30kmh slower than possible- which allowed my clean opponent in p3 to catch the guy behind me and myself. In the final turn I allowed the clean racer to overtake me and I defended p2 cleanly. End of race: my clean opponent 1st, myself in p2 and a clean race bonus and a nice boost to driver rating
Edit: I have the replay if anyone is interested - not sharing in this post tho to prevent naming/shaming.