I believe you are talking about gt5 driver hand animation. Correct?
If so, you would have to have your rotational degree at sumn like 90* to mimic what you see in gt5. The driver animation is not a sign of how far the wheels are actually turning in anyway shape or form.
If you were to try driving at 90* lock to lock it would be extremely erratic and not behave at all in a way that could be considered realism.