My tire pressures say 46 all around (coil suspension, 19" base wheels, it says 50 on the door so 46 is pretty close). Since I got my car back from service the other day I feel every rut in the road, and I feel like I'm being jiggled to death. It's really bouncy - not sure how else to describe it, and sitting in the driver's seat I feel like I'm a bobble-head doll. It's actually really annoying and almost nauseating. Any ideas on what could cause this? Does this sound like a loose or disconnected suspension component? I'm starting to think I need to tell the service center the solution to any problem before I arrive so they know what to do.