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Old 07-15-2011, 09:28 AM   #1
scrace
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Bent strut tower and left lower control arm (alignment question)

So I need to get an alignment after replacing my rear bushings. When I took my car into BMW for the rear sub frame inspection they listed a couple things that need to be fixed. Should I replace these two things before the alignment or won't it matter at this point? It's been aligned before without issue with this problem, is it worth the money for a car with 111k miles that I'm going to keep until I'm done with college?

Part and # they listed.

Right Front Strut Tower (bent)
mount 31336752735 - $75.03

Left Lower Control Arm (bent) 4R 33326770813 $155.61


IDK what to do.
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Old 07-15-2011, 09:35 AM   #2
new//M3fan
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It's worth it.

For the upper strut tower mount get Meyle HD about 35 a piece and meyle HD CA for 130. I would also suggest getting re-enforcement plates fitted and your towers straightened out as well.

Also, It's not the upper strut tower mounts that bend it's actually the strut tower POS sheet metal. Which is why i suggest fitting re-inforcement plates as they can be used as a template to straighten the strut tower.
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Last edited by new//M3fan; 07-15-2011 at 09:37 AM.
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Old 07-15-2011, 09:38 AM   #3
scrace
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Quote:
Originally Posted by newe46fan View Post
It's worth it.

For the upper strut tower mount get Meyle HD about 35 a piece and meyle HD CA for 130. I would also suggest getting re-enforcement plates fitted and your towers straightened out as well.

Also, It's not the upper strut tower mounts that bend it's actually the strut tower POS sheet metal. Which is why i suggest fitting re-inforcement plates as they can be used as a template to straighten the strut tower.
I've replaced my all struts and springs myself, can I do the rest myself?
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Old 07-15-2011, 09:46 AM   #4
new//M3fan
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Originally Posted by scrace View Post
I've replaced my all struts and springs myself, can I do the rest myself?
I can. idk about you.

Use a 2x4 piece of wood on top of the strut towers and a 3 pound hammer to straighten it out carefully while the re-enforcement plate sits underneath and using it as a benchmark on where the sheet metal should rest.

Then just tighten everything and the remaining damage will be straightened by the plate once you sandwich everything together.
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Last edited by new//M3fan; 07-15-2011 at 09:47 AM.
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Old 07-15-2011, 10:15 AM   #5
scrace
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Originally Posted by newe46fan View Post
I can. idk about you.

Use a 2x4 piece of wood on top of the strut towers and a 3 pound hammer to straighten it out carefully while the re-enforcement plate sits underneath and using it as a benchmark on where the sheet metal should rest.

Then just tighten everything and the remaining damage will be straightened by the plate once you sandwich everything together.
the problem is when I look at everything it doesn't seem damaged at all, if it's bent it's just slight to the point of almost nothing. I didn't have any issues installing the struts at the start everything fit perfectly.
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Old 07-15-2011, 10:23 AM   #6
new//M3fan
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Quote:
Originally Posted by scrace View Post
the problem is when I look at everything it doesn't seem damaged at all, if it's bent it's just slight to the point of almost nothing. I didn't have any issues installing the struts at the start everything fit perfectly.
That's a judgement call you're going to have to make since I haven't looked at them.
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Old 08-08-2011, 02:27 PM   #7
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So I am now getting around to doing this. How can I even tell if the tower is bent and how to bend it back? Would any alinement place be able to fix it? I can do the strut tower replacement myself, just unsure of how to fix what is bent or if it's even bent and the dealer was just guessing because I broke the nipple that goes through the hole at the top of the tower.

Are these the best reinforcement plates?
http://www.turnermotorsport.com/p-32...ates-pair.aspx
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Old 08-08-2011, 02:47 PM   #8
new//M3fan
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Quote:
Originally Posted by scrace View Post
So I am now getting around to doing this. How can I even tell if the tower is bent and how to bend it back? Would any alinement place be able to fix it? I can do the strut tower replacement myself, just unsure of how to fix what is bent or if it's even bent and the dealer was just guessing because I broke the nipple that goes through the hole at the top of the tower.

Are these the best reinforcement plates?
http://www.turnermotorsport.com/p-32...ates-pair.aspx
yes, those are the plates. I would just call your dealership and ask them to look them under any model year 330xi or 325xi and ask if they can do any better then the price they qouted you. That's what I did and they had them in stock.
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Old 08-08-2011, 06:40 PM   #9
scrace
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Originally Posted by newe46fan View Post
yes, those are the plates. I would just call your dealership and ask them to look them under any model year 330xi or 325xi and ask if they can do any better then the price they qouted you. That's what I did and they had them in stock.
I'd prefer to do it myself, I want to learn as much as possible.
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Old 11-27-2013, 02:28 AM   #10
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Hello, I recently had my 330 ci 2002 in to the dealer for inspection and they said the strut towers are bent, and need to be replaced along with the mounts. Can you guys shed some light on the subject? I can do the repairs with a good friend who is a Mechanic at Mercedes Benz, but is it a good idea to just "bend" back the towers and reinforce them? Forgive me for not knowing more about them. I just don't want to do this, realize I should not have and then put my self in a huge hole with a worse front end. Reason i took it in to the dealership (BMW) in the first place was it was wearing out the front tires (inner) and so I figured something was up obviously.


Thanks for any help or advice.

Last edited by SLP; 11-27-2013 at 02:29 AM.
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Old 11-27-2013, 03:33 AM   #11
paraklas
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Quote:
Originally Posted by SLP View Post
Hello, I recently had my 330 ci 2002 in to the dealer for inspection and they said the strut towers are bent, and need to be replaced along with the mounts. Can you guys shed some light on the subject? I can do the repairs with a good friend who is a Mechanic at Mercedes Benz, but is it a good idea to just "bend" back the towers and reinforce them? Forgive me for not knowing more about them. I just don't want to do this, realize I should not have and then put my self in a huge hole with a worse front end. Reason i took it in to the dealership (BMW) in the first place was it was wearing out the front tires (inner) and so I figured something was up obviously.


Thanks for any help or advice.
Common practice for bent strut towers is to hammer them back in shape (lots of info+pics if you search here), then use the genuine strut reinforcement plates to prevent such issues. All these within reasonable limits of course, ie if the strut tower has cracked then a replacement might be a better solution
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