OK so I bought GRIP on Steam today and so far I have played approximately 2 hours. As a new player I find it quite hard to be able to control the car. As some people mentioned above, steering feels really unresponsive and cars understeer. I used to play Rollcage when I was young so I am used to recovering quickly after crashing/being blown up which is kinda pain in the ass right now in GRIP, especially crashing into walls inside the tunnels on Liddo 5 track. That is just disaster.
I understand it may require some time to get used to, but car's behaviour is simply strange. Nevertheless, what is really aggravating is the sudden loss of control if you do not land perfectly or hit a bump. Once you lose control there is no way to counter it and adjust steering accordingly
Another thing which I would like to address are missiles. I would say both scorpion and assassin fly too low. Sometimes they crash before they hit opponents as they approach them or when they hit, it is in a very ineffective way (hit from behind, explosion actually boosts the car). Maybe it would be worth reworking the trajectory or navigation. Other than that weapons are very cool.
Overall I am very happy I invested in GRIP, enviroment is great and soundtrack is just awesome.