Contrary to LFS, I bumped the damper setting in the profiler all the way to 100% (LFS suggests 1% for damper and spring effect). Strength to 105% or something and then fiddle around in the iracing settings. Mainly the car lock-to-lock not matching my own wheel was annoying. It's not perfect yet, but I can drive the star mazda with more precision and feel. The miata cup and roadster need some more fiddling time.
Although there still is this violent shaking of the wheel when locking one or both front wheels, which is annoying. I've locked plenty of front wheels IRL, with the steering wheel staying completely stable. Numb even.