The 2 area's I struggle with the most with in all driving games are, sense of speed and handling. Unless I'm driving an open wheeled car, most cars feel slow to me. So that means that I don't slow down enough for turns or don't adjust my speed for grip. The speed doesn't register until I look at the replay and see how fast I was going. Today, I was playing with the Ruf rt12-awd in A/C and was having a hard time with my braking points. The car seems as fast as a GT3 car but of course with street tires and brakes, things are going to be a lot different. Driving GT3 cars all the time has made me reliant on sticky tires and downforce.
As for rear movement or just understanding the car in general, for me, every game is different. In PCars, I can't feel anything from the front tires but thanks to the tweaker files, I can manage because of the feedback I get from the rear. PCars still feels numb to me though, like I'm driving on butter. In Iracing, most times I"m just lost. I have no idea the rear is stepping out until it's gone, especially in the GT3 cars. rF2, A/C and RaceRoom seem to be the most communicative on my wheel. When the rear is going, I get a tug or lightness in my wheel that lets me know I need to correct. I still crash, but my chances of saving myself are better in those games.
Short of having a full motion rig, I don't know how you can really mimic a seat of the pants experience sitting in a stationary chair at home. The best I can hope for is some communication in my wheel that aligns with what I see on my screen to help assist in keeping the car on track. For me, some games do that better than others.