But after raining there is much sand and dirt on the tracksurface.
So you have extremly less grip.

In my opinion we should drive not only with 100%, that is nice for hotlapping but definitly not realistic.
Another aspect is, that a visitor at the race track can´t see the way in which the Pros are correcting the steering wheel.
It looks only from outside that they are driving on rails, in reality they have to play with pedals an steering wheel.