What could indicate a worn outer CV joint?

A clicking noise when turning is a classic symptom of a worn outer constant velocity (CV) joint. This happens because the CV joint is responsible for transferring torque to the wheels while allowing for up-and-down motion as well as turning movement. When the joint wears, especially at the outer end where it's subjected to more extreme angles during turns, it loses its smooth operation. As a result, the ball bearings within the joint can create clicking sounds when the vehicle is cornering.

In contrast, while a grinding noise can indicate various issues, it is often associated with internal components of the drivetrain rather than specifically pointing to the outer CV joint. A vibrating steering wheel might suggest wheel balancing issues or alignment problems, rather than directly indicating a worn CV joint. Excessive play in the steering can be linked to several other components, such as worn tie rods or bushings, not just the CV joint alone. Therefore, the clicking noise when turning is the most direct and specific indicator of a worn outer CV joint.