In fact the rubber parts on the car the original intention of invention are mostly inseparable from the "buffer vibration isolation". Suspension bush bearing 0320775 and even powertrain mounts were invented for the same reason to make people more comfortable. For suspension the root of vibration lies in the road surface. The undulation of the road surface acts on the wheels and is transmitted to the body through the suspension. In the suspension here there are two transmission paths of vibration: one is the spring and shock absorber and the other is the control arm of the suspension. In the matter of vibration isolation no matter how well springs and shock absorbers are done they cannot stop the vibration from going the other way hence the appearance of bushings.