How to know if you need new suspension rubbers

[Wingnut0021]

I been told that changing these rubbers is a good thing to do but whilst asking my local suspension joint they asked me if i really needed them or not since the rear ones are a pain in the ass the replace. What sort of things will i notice in the driving in the car if they are in need of replacement?

[greenfoam]

The rear panhard ones are easy to tell if they are stuffed and make you car drive heapppppppps better. Just rock your car from side to side pushing above the rear wheel arch if the body rocks side to side over the wheels at all, they are no good anymore, easy to replace too

[PaRaDoX]

swaybar link bush's make a huge diffrence aswell, u can usually tel if they're rooted, touch them.. if they're cracked n birttle then they need replacing