Rattling noise

The best approach is to have the steering and suspension systems inspected at a tire and alignment shop. The people there are experts at finding the causes of noises, vibrations, and bad tire wear.

As a rule, light metallic rattles are due to a worn part that involves a rubber bushing inside a metal bracket, and often are more annoying than they are a safety issue, but you want to know for sure. Ball joints and tie rod ends can separate leading to loss of control and crashes, but those typically make more of a dull "thud" sound or a thumping over bumps. This also applies when you can hear the rattle at real slow speeds, as in a parking lot. Suspension parts need a lot of force to make them move around and make noise. Slow speeds doesn't produce sufficient force for a lot of noises to show up.

The exception to this is with Ford product, especially their light front-wheel-drive cars. Rattles and other noises must never be ignored because they have a lot of trouble with separating ball joints.