I'm able to run mid to low 56's in the FXR, which is almost a 10 second gain. Considering the BF1 WR is 53, I'd say that is more doable than the FXR beating the BF1... At least on this track.
Might have to try this one too. :P I suck in the BF1 so I could be wrong.
Edit: I think I was wrong. I had so much downforce and speed that it actually keeps breaking the rear suspension. Crazy...
The rear suspension did that to me at AS3 ages ago when i tried to make a monster, i did AS3R one which was 1.11 or something round there and suspension was fine. Can't remember if i had full downforce on or not though, ill have to look.