Bushings Replacement DIY for Rear Lower Control Arm / Swing arm

[andrewwynn]

Either one worn will cause exactly the same time problem. Add you are surely aware adjust either camber or toe it affects the other.

The lower outer aft ball joint is the worst offender at causing tire wear butt it that's already new the bushings on the "swing arm" (bmw has even weirder name for it) are very likely culprit.


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[nextelbuddy]

Originally Posted by andrewwynn

Either one worn will cause exactly the same time problem. Add you are surely aware adjust either camber or toe it affects the other.

The lower outer aft ball joint is the worst offender at causing tire wear butt it that's already new the bushings on the "swing arm" (bmw has even weirder name for it) are very likely culprit.


Sent from my iPhone using Tapatalk Pro

Yes understood. outer ball joint was replaced from the lemforder 20 piece kit from FCPEuro. it didnt help alignment and did not help with trying to get camber more on the tighter side of -1.5 to -1.8 regardless of the toe adjustment we tried.

the passenger side could be brought in to -1.8 at max camber adjustment on the ecentric bolt but the driver side could only be brought to -2.5 indicating that the driver side swing arm bushings are significantly more worn than the passenger side ones.


i read through the entire thread and didnt see anyone mention if both bushings in one swing arm are identical and the same size. if they are then it sounds like i can order 4 poly bushings to replace all 4.


just hoping someone can confirm that with out me going under the car with calipers to confirm myself.

[Fifty150hs]

Originally Posted by nextelbuddy

Yes understood. outer ball joint was replaced from the lemforder 20 piece kit from FCPEuro. it didnt help alignment and did not help with trying to get camber more on the tighter side of -1.5 to -1.8 regardless of the toe adjustment we tried.

the passenger side could be brought in to -1.8 at max camber adjustment on the ecentric bolt but the driver side could only be brought to -2.5 indicating that the driver side swing arm bushings are significantly more worn than the passenger side ones.


i read through the entire thread and didnt see anyone mention if both bushings in one swing arm are identical and the same size. if they are then it sounds like i can order 4 poly bushings to replace all 4.


just hoping someone can confirm that with out me going under the car with calipers to confirm myself.

The bushings are two different sizes. There are two part numbers for each swing arm. One is the front and one is the rear. Four bushings total. Check RealOEM and it will give you the part numbers.

[nextelbuddy]

Originally Posted by Fifty150hs

The bushings are two different sizes. There are two part numbers for each swing arm. One is the front and one is the rear. Four bushings total. Check RealOEM and it will give you the part numbers.

Real OEM actually doesnt show those bushings with part#s unfortunately. only the hardware for them but not the bushings them selves.


i found the 2 different part#s on PSB website.

the original person who posted about Poly bushings, never posted the link to the bushings only the youtube video which only links to the Front bushing PSB653


the rear bushing is also available and is PSB654

not sure if everyone else just clicked on the video and bought just the front bushing but it makes no sense to remove the swing arm and replace only 1 of the bushings if you can replace both at the same time.


front bushing PSB653 - https://psbushings.com/product/2-x-b...poly-psb-bush/

rear bushing PSB 654 - https://psbushings.com/product/2-x-b...poly-psb-bush/

i knew there had to be 2 because in the YT video at the end it shows both front and rear bushings replaced in the swing arm. it stinks to have to hunt around. you would think PSB would include a link or part# in the description or at least say. BYW there is also a rear bushing we offer as well.


and attached is the screen shot of realoem not showing the part#s to the 2 bushings. i do try to research first before asking seemly repetitive questions.

[Fifty150hs]

Originally Posted by nextelbuddy

Real OEM actually doesnt show those bushings with part#s unfortunately. only the hardware for them but not the bushings them selves.


i found the 2 different part#s on PSB website.

the original person who posted about Poly bushings, never posted the link to the bushings only the youtube video which only links to the Front bushing PSB653


the rear bushing is also available and is PSB654

not sure if everyone else just clicked on the video and bought just the front bushing but it makes no sense to remove the swing arm and replace only 1 of the bushings if you can replace both at the same time.


front bushing PSB653 - https://psbushings.com/product/2-x-b...poly-psb-bush/

rear bushing PSB 654 - https://psbushings.com/product/2-x-b...poly-psb-bush/

i knew there had to be 2 because in the YT video at the end it shows both front and rear bushings replaced in the swing arm. it stinks to have to hunt around. you would think PSB would include a link or part# in the description or at least say. BYW there is also a rear bushing we offer as well.


and attached is the screen shot of realoem not showing the part#s to the 2 bushings. i do try to research first before asking seemly repetitive questions.

You're right. Forgot BMW would rather sell an $800 part instead of replacing the bushings. I found the part numbers FCP.

[nextelbuddy]

Originally Posted by Fifty150hs

You're right. Forgot BMW would rather sell an $800 part instead of replacing the bushings. I found the part numbers FCP.

appreciate the help!