If you feel that your car may have problems with the suspension parts, then you should try to feel where precisely in the car these are coming from. One way to do this is to try to focus on the feel of the car as you drive. You might hopefully be able to feel the difference in the suspension parts. A tip is that if the vibration is coming through the steering wheel and you feel it in your hands, then you probably have a problem with the suspension at the front of your car. However if the vibration is coming through the seat, then it is probably coming from the back of the car. If this is the case then you should go and have a look at the area to start with.
The first thing to look at is your wheel in the affected area. Often people will misdiagnose their suspension as having problems when it is their wheel that has problems in reality.