- Independent suspension
Independent wheel suspension:
Independent suspension means that each wheel has its own suspension. That is, each wheel has its own wishbone and each wheel can compress independently of each other. The wishbones are attached to the subframe, also called a rear axle carrier. Vehicles with a rigid rear axle or a semi-independent rear axle therefore have no wishbones or subframe at the rear. It is more expensive to produce because it contains more materials, but the 2 big advantages are: Better road holding and better comfort. The newer cars are increasingly equipped with independent wheel suspension.
The image below shows the rear axle of a car with independent (rear) wheel suspension.
The coil springs are actually mounted on the wishbones on the left and right sides, but they are now not visible in the image.
The wishbones 8 and reaction wishbones 4 and 5 spring with it when the wheel compresses or rebounds. Bouncing in or out of the left side does not affect the in and out bounce of the right side. For example, the left side can be completely compressed, while the right side is still in the rest position. With a rigid or semi-independent rear axle, the left side and the right side are connected to each other. When the left wheel compresses, it also affects the suspension travel of the right wheel. And vice versa.