while driving home from work today i noticed a clacking noise coming from one of the rear wheels. checked and the wheel was not loose and no other chassis parts are loose. so had my brother drive the car slowly while i walked next to it and could hear something in the tire/wheel, proceeded to take the wheel off and can hear something inside the tire, i assume it is the tire pressure sensor, car is going in monday morning. just wondering if anyone else has had this happen to them.