Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBMW2009550I STANDARD, GS653BZREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2370 (FRONT AXLE - TIGHTENING TORQUES - E90/E92 (AWD))CONTROL ARMS AND STRUTS3112 CONTROL ARMS AND STRUTS
2009 BMW 550i Standard, GS653BZ
3112 Control Arms and Struts
2009 BMW 550i Standard, GS653BZSECTION 3112 Control Arms and Struts
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2013 BMW 328xi, 2012 BMW 328xi, 2011 BMW 328xi, 2010 BMW 335xi, and 2010 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.
TIGHTENING TORQUE SPECIFICATION - CONTROL ARMS AND STRUTS
| Type | Thread | Tightening specification | Measure | ||
|---|---|---|---|---|---|
| 1AZ | Tension strut to front axle support | E81/E82/E84/E87/E88/E90/E91/E93/E92 | M12 8.8 | Replace screw and nut TIGHTEN IN NORMAL POSITION |
|
| Jointing torque | 68 Nm | ||||
| Torque angle | 90 ° | ||||
| E81/E82/E87/E90/E91/E92/E93 | M12 10.9 | Replace nut TIGHTEN IN NORMAL POSITION |
|||
| Jointing torque | 100 Nm | ||||
| Torque angle | 90 ° | ||||
| 2AZ | Tension strut to swivel bearing | E81/E82/E84/E87/E88/E90/E91/E92/E93 | M14 | Replace nut | 165 Nm |
| 3AZ | Wishbone to front axle support | E81/E82/E84/E87/E88/E90/E91/E92/E93 | M12 8.8 | Replace screw and nut TIGHTEN IN NORMAL POSITION |
|
| Jointing torque | 68 Nm | ||||
| Torque angle | 90 ° | ||||
| E81/E82/E87/E90/E91/E92/E93 | M12 10.9 | Replace nut TIGHTEN IN NORMAL POSITION |
|||
| Jointing torque | 100 Nm | ||||
| Torque angle | 90 ° | ||||
| 4AZ | Wishbone to swivel bearing | E81/E82/E84/E87/E88/E90/E91/E92/E93 | M14 | Replace nut | 165 Nm |
| E84/4WD, E90/4WD, E91/4WD, E92/4WD | M14 | Replace nut | 80 Nm | ||
| 5AZ | Compression strut to front axle support | E84/4WD, E90/4WD, E91/4WD, E92/4WD | M12 | Replace nut TIGHTEN IN NORMAL POSITION |
|
| Jointing torque | 68 Nm | ||||
| Torque angle | 90 ° | ||||
| 6AZ | Compression strut to guide joint | E84/4WD, E90/4WD, E91/4WD, E92/4WD | M14 | Replace nut | 80 Nm |
| 7AZ | Guide joint to swivel bearing | E84/4WD, E90/4WD, E91/4WD, E92/4WD | M10 | Recut thread Replace screws |
60 Nm |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.