hi, whenever we turn a tight corner, or go over a speed-bump, or over a pothole etc etc... there's a clanging sound from under the car. i think its underneath me (im in the back left passenger seat) but my dad (the driver) can hear it underneath him, so we've come to a conclusion that its somewhere around the middle, close to the floor of the car, and metal hitting metal, any ideas people? cheer's...