There are several basic checks to find out if your suspension is working properly. The simplest check is inspecting the tires. Tires that are unevenly worn indicate suspension problems or alignment issues.
A test drive can also indicate problems. Listen for unusual noises over bumps or around corners. Notice if the vehicle pulls to one side while driving in a straight line. Observe if the vehicle continues to bounce after driving over bumps.
If you suspect a problem, have the suspension thoroughly inspected on a lift. Taking the vehicle weight off the suspension can help diagnose worn components.