As i am driving down the road the rear seats shake back and forth and vibrate alot. IT gets to the point to where they make a knocking noise over any bumps from them moving back and forth. This is my first suv, but doesn't seem normal to me. i can go outside and physically shake the seats and they move a good bit... Does anyone else have this issue or are the seats tight when in the upright position? i checked my brothers 2009 and his were tight, but he also has leather... Please let me know if anyone seats does the same as mine.