With the Plymouth Ball Joints properly maintained they can last for many years on your vehicle. These are the points of contact the spindle makes so it can be securely attached to the vehicle and still make it possible for the front wheels to pivot.
The longevity of the ball joints on your Plymouth is determined by the way and frequency they are lubricated. In the past the ball joints along with the other suspension and steering components on your vehicle were greased during a routine oil change. This required the Plymouth to be lifted into the air with no weight on the wheels.
Today, with many quick lube places changing the oil for most of the cars on the road in America, the use of roll on ramps is more economical. With the weight on the wheels, the lubrication of the Plymouth ball joints is not possible for the entire surface. This will cause the ball joints to prematurely wear over the course of the years it is in service.
If the technician informs you they are lubing the chassis components and being on a ramp is just as good as the vehicle being in the air, you have just talked with an inexperienced technician. Remember these quick lube places are in business to make money by working on cars, not necessarily fixing them or maintaining them.
The proper lubrication of the ball joints on your Plymouth is critical to not only their longevity, but precision control when you are maneuvering your vehicle in traffic. Once they are worn, the entire wheel assembly will be moving in direction that are not influenced by the driver but by the pull on the wheels making contact with the road.