So I did a little SRF on and off test with the 05 MINI at Deep Forest. Practice mode no tire wear 5 laps per test. No aids. ABS 3/1.
First SRF ON with Comfort Mediums like our run. Ran without the boost starting in the 1:38's then with 2 best laps in the low 1:36's. Familiar car feel from our runs.
Next SRF OFF with Comfort Softs. All laps were low 1:35's. Far more overall grip, I could take corners faster and more confidently. Brake zones were shorter, it just felt and was faster.
So this confirmed what I'd tried before: there's no chance to run faster with 1 less grade tire with SRF engaged. Of course this was hot lapping with no panic stopping involved. I felt pretty good about the format.
SRF's effects came into play much more noticeably when I purposely got the car out of shape. I was actually amazed at how it kept my car from sliding off or locking up. The softer tire couldn't get close to compensating. No way. For the purpose of setting a fast time though, that wouldn't matter. The time lost would be significant no matter if SRF was on or not. Plus we can't turn it off!
I'll throw some older non SRF Events in the mix. Might as well run them before PD replaces them with forced SRF Events. Same type regs. Maybe have a different leaderboard for ABS1 if folks are having a tough time without that assist.