A characteristic relating to transmission of a longitudinal force input to a front wheel from the front wheel to a vehicle body is set to a first transmission force characteristic. A sensitivity of the vehicle to the longitudinal force transmitted from the front wheel to the vehicle body is set to first sensitivity. The maximum value of the square of a product of a value representing the first transmission force characteristic and a value representing the first sensitivity in a predetermined frequency range preset so as to include a frequency at which the value representing the first transmission force characteristic takes a peak value is set to an evaluation indication value. A complex spring constant in the vehicle longitudinal direction of the rear wheel suspension is set so that the evaluation indication value takes the minimum value out of values in a variable range of the evaluation indication value.

A suspension insulator includes a bracket section configured to be coupled to a vehicle body, an inner core positioned inside the bracket section, a bushing module surrounding the inner core and having a passage part which contains a fluid, an outer pipe surrounding the bushing module, and an upper section coupled to the bracket section and configured to cover the bushing module.

A vibration damper of a vehicle wheel is supported on a vehicle body by a damper mount having an elastic body. The vibration damper includes a fluid-filled cylinder, a piston guided in the cylinder, and a piston rod. A wherein a damper chamber is formed in the cylinder on each side of the piston. The damper mount includes a hydraulic pressure chamber connected via a fluid-conducting connection to the damper chambers, whose volumes are respectively reduced when the vehicle wheel is deflected in relation to the vehicle body. In addition, a throttle valve is provided in the fluid-conducting connection, wherein the throttle value comprises a valve body that is displaceable in relation to a valve seat counter to a spring force, and a throttle bore.

A vibration damper, assigned to a wheel of a vehicle, includes a damper cylinder, a damper piston with a piston rod configured to be guided in the damper cylinder, and a damper chamber, formed in the damper chamber on each side of the damper piston. The vibration damper further includes a pressure accumulator, in the form of a gas pressure cushion, connected to the damper chamber lying opposite the piston rod. The vibration damper is mounted on the vehicle body by a damper mount with a rubber-elastic body that is deformable in a shifting direction of the damper piston. A hydraulic pressure chamber is formed in the damper mount, and is connected via a fluid-conducting connection to the damper chambers whose volumes are respectively reduced when the wheel is deflected in relation to the vehicle body. The damper chambers are connected hydraulically to one another via a hydraulic pump driven by a motor. The damper mount includes a spring element that acts on the rubber-elastic body in the shifting direction of the damper piston, such that a spring force of the spring element, in the case of a stationary damper piston and equality of pressure in the two damper chambers, results in forces acting on the rubber-elastic body in the shifting direction of the damper piston to at least approximately cancel one another out.

An anti-vibration device (1) includes a covering member (17), arranged between an inner attachment member (11) and an outer cylinder (12), that covers, from outside in the radial direction, the area between a pair of middle elastic bodies (32) adjacent to each other in the circumferential direction, and defines a pair of liquid chambers (14a, 14b) between the inner attachment member and the covering member. An orifice passage (19) connecting each liquid chamber is formed between the covering member and the outer cylinder. A first connecting aperture (18) and a second connecting aperture (20) that separately connect each liquid chamber and the orifice passage are formed in the covering member. An injection hole (12a) formed in the outer cylinder and sealed by a sealing material (16) opens toward at least one of the first connecting aperture and the second connecting aperture.