I already know what your doing wrong (wow what a way to start a post). The Wii Wheel is actually uber precise, I guarantee your movements are to exaggerated, my son does the same thing and I am forced to calm him down and have him make smaller movements. Also, the hop button will really tighten up your turns, as for the suggestion your sensor bar is somehow incorrectly set, well it would have little effect as the game only uses it fr menu functions.Slight movements like you would in a real car.