ok heres the problem im having. when im driving i get this bump feeling on the passenger side as if i were hitting little potholes all the time. a friend told me one of my rims maybe bent so i took em in to discount tires to get em checked/balanced and they were fine. problem persists. and i figure if the rim were bent id feel the bump on every rotation of the wheel however it comes in more like every 3 seconds or so, at any speed on any road. it feels almost like it bounces upward a tiny bit. but i cant really tell if its coming from the front or back. any ideas or suggestions would help a lot...thanx in advance.