If you have a problem with your suspension, then it is important to have it repaired before any further damage is done. You can tell if your suspension is bad if the ride is a lot more bumpy than usual. The suspension system is designed to absorb the bumps of the road. You should also look at the frame of your vehicle. If it is sunken, then this is a sign that the springs are broken. The vehicle may also look like it leans to one side when it is parked.
Additionally, you may notice oil on the shocks. Take a flashlight and shine it on the shocks underneath the wheels. If you see and feel oil, then it is time for you to get the shocks replaced. Shocks leak oil when they are damaged and not doing them properly.