I get it on mine - basically, you can be going round a corner or in a straight line or whatever and you hit a bump, which basically takes the steering wheel in the direction it wants to go, leaving you to either release your grip and wait for it to settle, hoping it lines up correctly again, or grab it tight and try to steer where *you* want the car to go rather than where *it* wants to go.
I think.
I dont really find it a problem ultimately, just makes the steering wheel a bit twitchy on anything but the smoothest roads.