That is the RWD thing ! You need to understand what is going on when slamming the throttle. With a 4WD there is less power overall on front and rear axle, so it is easier regarding this aspect. On a FWD, if you are putting too much effort on the driving wheels, you will simply go straight, and so releasing the throttle calm down the thing ... On a RWD when cornering, if you :
- release suddenly the throttle you brake you rear wheel doing a kind of handbrake kick
- put too much throttle and you can spin them, making the car to slide from the rear
=> in both cases you may loose the control of the car (or at least the rear wheels).
So it requires some controls and practice to make it right, but for having driven RWD in real life for lots of years now, I can tell you they can be the most satisfying experience in the end
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In LFS, due to some flaws in the physics, it is a bit difficult to feel very comfortable quickly with RWD compare to FWD/4WD vehicles, but do not give up and practice, you may enjoy ! (keyboard is not the best possible experience of course, but anyway ... )