Mazda X-5. Manual — part 51

REAR SUSPENSION

02–14–1

02–14

02–14

REAR SUSPENSION

REAR SUSPENSION OUTLINE . . . . . . . 02–14–1
REAR SUSPENSION

STRUCTURAL VIEW. . . . . . . . . . . . . . . 02–14–1

MULTI-LINK REAR SUSPENSION

CONSTRUCTION . . . . . . . . . . . . . . . . . 02–14–2

Optimized Link and Shock Absorber

Layout. . . . . . . . . . . . . . . . . . . . . . . . . 02–14–2

Improved Roadholding . . . . . . . . . . . . . 02–14–2

REAR SHOCK ABSORBER

CONSTRUCTION . . . . . . . . . . . . . . . . . . 02–14–2

REAR CROSSMEMBER

CONSTRUCTION . . . . . . . . . . . . . . . . . . 02–14–3

End of Toc

REAR SUSPENSION OUTLINE

E5U021400000N01

• A multi-link suspension composed of five links has been adopted.

• The links have been lengthened and optimally positioned. Due to this, they constantly provide ideal geometry

to respond to external forces applied during driving, improving handling stability and riding comfort, and
reducing road noise.

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REAR SUSPENSION STRUCTURAL VIEW

E5U021400000N02

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REAR SHOCK ABSORBER
AND COIL SPRING

REAR SHOCK
ABSORBER

REAR
CROSSMEMBER

REAR LATERAL
LINK (UPPER)

REAR
STABILIZER

REAR STABILIZER
CONTROL LINK

TOE CONTROL
LINK

REAR LATERAL
LINK (LOWER)

REAR TRAILING
LINK (UPPER)

REAR TRAILING
LINK (LOWER)

E5U214ZS5001

REAR SUSPENSION

02–14–2

MULTI-LINK REAR SUSPENSION CONSTRUCTION

E5U021400000N03

Optimized Link and Shock Absorber Layout
Compliance toe control

• The suspension system layout is such that the

center axis line of the shock absorber intersects
to the outside and rear of the virtual kingpin axis.
This layout ensures that the toe-in moment is
constantly produced around the virtual kingpin
axis of the rear wheels. Due to this, the rear
wheels constantly and securely provide a high
level of gripping power.

Compliance camber control

• Initial load in the negative camber direction is

applied to the rear lateral links (upper/lower).
Because of this, the bushings anchoring the rear
lateral links (upper/lower) to the rear
crossmember are constantly pressed toward the
rear lateral links. As a result, the central, non-
sensitive region of the bushing is not used,
thereby minimizing delayed steering response
and suppressing parasitic (unnecessary) wheel
movement in response to external disturbances.

Elongated links

• Elongated upper and lower rear lateral links have

been adopted. They reduce torsion applied to the
bushings on the rear crossmember side during
jounce and rebound of the rear wheels, providing smooth link behavior.

Improved Roadholding

• The damper lever ratio has been set at approx. 1 to improve the efficiency of shock absorber operation.

— Damper lever ratio:

shock absorber stroke (B)/wheel vertical
stroke (A)

— A layout with the damper lever ratio close to 1

makes it possible to provide a damping force
even during minute strokes. As result,
excellent roadholding is exhibited in a variety
of driving conditions.

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REAR SHOCK ABSORBER CONSTRUCTION

E5U021428700N01

• As with the front shock absorber, a high-pressure gas-filled monotube shock absorber has been adopted.

• Placement of the rear coil springs below floor level reduces lateral spring force on the damper rods and thereby

minimizes friction.

• This layout also contributes to an enlarged trunk compartment space.

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CENTER AXIS OF
SHOCK ABSORBER

TOE-IN MOMENT

VIRTUAL
KINGPIN AXIS

INTERSECTS TO
REAR OF VIRTUAL
KINGPIN AXIS

CHU0214S002

COIL SPRING
REACTION FORCE

OFFSET
MOMENT
LENGTH

NEGATIVE
CAMBER
MOMENT

INITIAL LOAD TO
LATERAL LINKS

VERTICAL LOAD

CHU0214S003

A

B

BHJ0214N005

REAR SUSPENSION

02–14–3

02–14

REAR CROSSMEMBER CONSTRUCTION

E5U021428400N01

• Adoption of a six-point mounting system rear crossmember ensures link support stiffness and isolates vibration

improving riding comfort and reducing road noise.

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E5U214ZS5002