What maintenance issue can affect the performance of a CV joint?

A leaking CV joint boot is a significant maintenance issue that can greatly affect the performance of a CV joint. The CV boot is a flexible protective cover that keeps the grease inside the joint while also preventing dirt and debris from getting in. When the boot is compromised (such as by a tear or crack), the grease can escape, leading to insufficient lubrication of the joint. This can result in increased friction and wear, potentially causing premature failure of the CV joint.

Without proper lubrication, the joint can become noisy and may ultimately fail, leading to more extensive and costly repairs. Keeping the CV boots in good condition is crucial for maintaining the functionality and lifespan of CV joints in vehicles.