My front suspension is a little shaky and makes a tweaky sound when driving slowly. So I need to change the suspension? Also, the rear wheel on the driver's side vibrates a lot.
You need to have the front lower control arms checked for worn out bushings and ball joint. The struts may be worn out also. The rear tires should be checked for balance or damage. I recommend having a qualified mechanic, like one from YourMechanic, come and inspect your suspension system as well as your rear tires.