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Replacing Your BMW Rear Spring Coils
 
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Pelican Technical Article:

Replacing Your BMW Rear Spring Coils

Nick Czerula

Time:

4 hours4 hrs

Tab:

$350

Talent:

****

Tools:

Flathead screwdriver, 18mm wrench, 18mm socket

Applicable Models:

BMW 325i Sedan (2006)
BMW 325xi Sedan/Wagon (2006)
BMW 328i xDrive Coupe (2009-13)
BMW 328i xDrive Sedan (2009-11)
BMW 328i xDrive Wagon (2009-12)
BMW 328i/xi Coupe (2007-13)
BMW 328i/xi Sedan (2007-11)
BMW 328i/xi Wagon (2007-12)
BMW 330i/xi Sedan (2006)
BMW 335d/i/xi Sedan (2007-11)
BMW 335i xDrive Coupe (2009-13)
BMW 335i xDrive Sedan (2009-11)
BMW 335i/is/xi Coupe (2007-13)

Parts Required:

Rear coil springs, Rear upper control arm

Hot Tip:

Replace in pairs

Performance Gain:

Repair faulty control arm and prepare vehicle for alignment

Complementary Modification:

Replace spring mounts

The rear coil springs on E90 models have a tendency to break in salt belt areas. This is due to dirt and debris in the lower spring area, retaining moisture and causing spring to rust then fracture. It's important to replace your coil springs in a pair to avoid an uneven suspension. Inspect spring pads for wear and replace if necessary and always clean the spring perch area thoroughly. You can also use this repair if installing performance springs in your E90.

Raise rear of vehicle and support safely on jack stands. See our tech article on jacking up your vehicle. When jacking up, get vehicle as high as possible. You will have to be able to fit a hydraulic jack under the rear swing arm.

Remove rear wheels.

Remove rear shocks. See our tech article on rear shock removing.

Place a jack under the lower swing arm. This will support the rear wheel bearing carrier when you remove lower swing arm fastener.

Working at upper control arm on brake rotor side, remove control arm fastener.
Figure 1

Working at upper control arm on brake rotor side, remove control arm fastener. (green arrows) Nut and bolt are both 21mm.

With swing arm fasteners removed, slowly lower jack until swing arm pressure is relieved.
Figure 2

With swing arm fasteners removed, slowly lower jack until swing arm pressure is relieved.

Pull down on swing arm until coil spring drops out of upper mount.
Figure 3

Pull down on swing arm until coil spring drops out of upper mount. Then lift coil spring up and out of swing arm to remove.

If the upper spring insulator does not come out with spring, pull down to remove.
Figure 4

If the upper spring insulator does not come out with spring, pull down to remove. (green arrow)

Inspect upper spring mount.
Figure 5

Inspect upper spring mount. If it is rusty or corroded, remove from vehicle. (green arrow) To remove, gently lever out using a prybar. It will pop out with very little pressure, be prepared to catch it.

Inspect lower spring insulator and replace if needed.
Figure 6

Inspect lower spring insulator and replace if needed. (green arrow) To replace pull it out of swing arm.

When installing new spring, align end of spring (green arrow) with correct spot on insulator (yellow arrow).
Figure 7

When installing new spring, align end of spring (green arrow) with correct spot on insulator (yellow arrow). Insulator installs into swing arm one way.

Lift swing arm while lining up coil spring with upper mount.
Figure 8

Lift swing arm while lining up coil spring with upper mount. Then slide hydraulic jack into place. Once spring is properly installed in trailing arm, slowly raise suspension back into position. Install swing arm mounting fastener, then remove hydraulic jack from under training arm. Re-install rear shock and remaining items. After replacing your rear coil springs, it is a good idea to have your vehicle professionally aligned. This will prevent premature tire wear and ensure good handling.

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Comments and Suggestions:
E90 Tony Comments: Any tips on lining up the lower camber arm to the knuckle when re-installing the bolt?
June 2, 2016
  Followup from the Pelican Staff: Use a drift to line it up, then slide the fastener in. - Nick at Pelican Parts  
TTA Comments: Good morning,
Is the time quoted above to replace one or both coil springs. In addition, does the tab included parts and labor? If so, please let provide the estimated hourly labor rate.
Thanks,
TTA
February 24, 2015
  Followup from the Pelican Staff: The time is for both sides and the TAB is for parts cost.

Hourly rate is dependent on your location. Call a few shops for an estimate. - Nick at Pelican Parts
 
Harry Comments: I am planning on changing the suspension on my 335i E92, beside the shocks, struts, springs, rear strut mount and front shock mount, what other item should I repalced?
January 29, 2015
  Followup from the Pelican Staff: Check the front control arm bushings and sway bar end links. Those are all common issues. - Nick at Pelican Parts  
Fernando Comments: Is there a need to loosen the eccentric washer bolt when just replacing the rear springs? Just confused as to why you recommend doing it when replacing the ball joint but not spring install, it looks like the arm is out of the way enough to replace the ball joint.
July 23, 2014
  Followup from the Pelican Staff: If it is mentioned in one and not the other, it is because I did not have to do it in one, but did the in the other. I base most of my articles on how the factory performs the repair. If you have any questions regarding the procedure that our's leave unanswered, I would grab a repair manual, Give our parts specialists a call at 1-888-280-7799. - Nick at Pelican Parts  
frank Comments: hello need parts for a bmw1985 e used
July 15, 2013
  Followup from the Pelican Staff: Give our parts specialists a call at 1-888-280-7799. They can help you find the right part.
- Nick at Pelican Parts
 

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Page last updated: Mon 12/5/2016 02:22:13 AM