I go with the stock cars and the tires you get when you buy them. Recently bought 370Z and it comes with Sports Hard tires by default, so does the LFA.. so i don't know should i change that to some of the Comfort ones.. I go with the comforts for cars of ~200hp and bellow.
All aids off, ABS at 1 for the cars i know that have it in rl..
Btw, those of you with track day experience, are those amateur series ran with ABS or without it, are you actually faster with it or without it (on the track..)