What might a clunking sound from the suspension indicate?

A clunking sound from the suspension is often indicative of loose suspension components. This noise typically arises when parts such as bushings, bolts, or ball joints are not secured properly or have worn out over time, leading to movement that generates a clunking noise during driving or when going over bumps. When any of these components are loose, they can shift under load, causing the noise as they move against other parts of the suspension system.

The other options do not typically produce a clunking noise. Improper wheel balancing may lead to vibrations rather than clunks, low tire pressure can cause a different type of noise and handling issue, and overinflated tires may result in a harsh ride or increased wear but not necessarily a clunking sound. The presence of a clunking sound specifically points towards a potential issue with the integrity of the suspension system.