What should be done if a vehicle's ball joints show excessive play?

When a vehicle's ball joints exhibit excessive play, it indicates that they have become worn or damaged to the point where they can no longer properly support the weight of the vehicle or maintain proper wheel alignment. This excessive wear can lead to significant issues, including compromised steering response, uneven tire wear, and potential loss of control while driving.

Replacing the ball joints is necessary to ensure the safety and performance of the vehicle. New ball joints restore the necessary tightness and stability to the suspension system, allowing for proper handling and tire wear. Continuing to drive with excessively worn ball joints can lead to further damage to the suspension components and create unsafe driving conditions.

Lubrication, monitoring, or adjustment of ball joints may be applicable in other contexts, but once excessive play is detected, replacement is the most reliable and appropriate action to maintain vehicle safety.