There's nothing unusual about spining when you hit an inside kerb. It depends on how you hit it and what type it is. But if it's happening all of the time, it might be a wheel setting. Try increasing Steering Help or, possibly better, increasing the low sensitivity (or whatever it's called, it's at the top of the list) to 100%. That makes it much smoother.
And you'll probably want new set-ups, although they won't be causing this. It also takes time to learn to drive with a wheel, it could just be poor driving on your part