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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Fri, Nov-12-2010, 09:39:54 PM   #11
azndrunk74
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so i had the upper control arm replaced. it was not necessary to remove/unbolt the rear diff and took the mechanic less than 2 hours to do.

surprisingly it also fixed the following additional issues i had before:

1) my rear passenger side would ALWAYS be much lower than the driver's side, i compensated for this by getting coilovers and had the sleeve adjusted all the way to the top (compared to midway for the driver's side). even then, it was still too low and i had to add an additional thicker spring pad to make it even aesthetically. after replacing the upper arm i had to lower the collar/sleeve back down a good inch and threw in the original spring pad to make it even again.

2) my rear passenger wheel could never align correctly. it would always toe out with anything less than -3 degrees camber. i replaced the OEM lower control arms with aluminum adjustables thinking they were bent, and the alignment was still no good. with the new upper arm, the camber has changed which leads me to believe the old upper arm was bent to hell. i am certain i can have it aligned correctly now (FINALLY, 3+ years later).

3) i always had this weird clunk/thud sound from the rear passenger side going slowly over speed bumps. i thought it had to do with my soft top mechanisms, the issue is now gone.
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Old Sun, Oct-16-2011, 12:37:36 AM   #12
e46coupee
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Default Re: well my rear spring perch ripped, question about removal of control arm

^
I'm just about to do this. I had the same issue. Hopefully this fixes it.
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Old Fri, Oct-21-2011, 12:09:29 PM   #13
yamashek
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Default Re: well my rear spring perch ripped, question about removal of control arm

Quote:
Originally Posted by azndrunk74 View Post
so i had the upper control arm replaced. it was not necessary to remove/unbolt the rear diff and took the mechanic less than 2 hours to do.

surprisingly it also fixed the following additional issues i had before:

1) my rear passenger side would ALWAYS be much lower than the driver's side, i compensated for this by getting coilovers and had the sleeve adjusted all the way to the top (compared to midway for the driver's side). even then, it was still too low and i had to add an additional thicker spring pad to make it even aesthetically. after replacing the upper arm i had to lower the collar/sleeve back down a good inch and threw in the original spring pad to make it even again.

2) my rear passenger wheel could never align correctly. it would always toe out with anything less than -3 degrees camber. i replaced the OEM lower control arms with aluminum adjustables thinking they were bent, and the alignment was still no good. with the new upper arm, the camber has changed which leads me to believe the old upper arm was bent to hell. i am certain i can have it aligned correctly now (FINALLY, 3+ years later).

3) i always had this weird clunk/thud sound from the rear passenger side going slowly over speed bumps. i thought it had to do with my soft top mechanisms, the issue is now gone.
congrats on the fix...

do you happen to have the pictures of the damage on your rear suspension arms?

were the coilovers installed according to its manual? if so, it will be a problem for other users with risks of ripping the rear control arm...
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Old Fri, Oct-21-2011, 05:47:50 PM   #14
azndrunk74
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Default Re: well my rear spring perch ripped, question about removal of control arm

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Originally Posted by yamashek View Post
congrats on the fix...

do you happen to have the pictures of the damage on your rear suspension arms?

were the coilovers installed according to its manual? if so, it will be a problem for other users with risks of ripping the rear control arm...
yes the coilovers were installed correctly.

dug around my computer and happen to have pics...

top view of ripped control arm


bottom view of ripped control arm


ripped control arm while still on the car...rubbing the axle



with the new arm and reinforcement plates installed
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Old Fri, Oct-21-2011, 05:54:56 PM   #15
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Default Re: well my rear spring perch ripped, question about removal of control arm

Is it not possible to run the pss9 adjuster on the top of the spring (chassis side)? That's what you're supposed to do with all the other coilover systems due to aluminum control arms.
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Old Fri, Oct-21-2011, 07:58:02 PM   #16
ferrarix99
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Default Re: well my rear spring perch ripped, question about removal of control arm

When the subframe is down change all the bushings back there.

Edit: too late lol
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Discussing well my rear spring perch ripped, question about removal of control arm in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)