I dont like the unlimited steering wheel options from games like dirt 4 and project cars. The steering ratio should be what is depicted of the car. GT has been good with having this part fixed. When racing games give you all this steering wheel sensitivity settings, steering ratio, damper, it's alot of work to tune it. What I'm really saying is, I expect the game to have done their job in researching and making the steering ratio as accurate to the real life car as possible when playing with a wheel not leaving it up to us to tweak the steering ratio and sensitivity.
In GTS I do wish the Drift steering option was at least available in sport mode. The FFB steering wheel behaves slightly better, more road and tire feedback when using Drift steering with a ffb steering wheel. Unfortunately it is not available for racing in sport mode.