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-   -   Mushrooming strut towers revisited: M3 strut mounts vs. "regular" E46 strut mounts (http://forum.e46fanatics.com/showthread.php?t=959878)

yonmoor 12-08-2012 07:20 PM

Mushrooming strut towers revisited: M3 strut mounts vs. "regular" E46 strut mounts
 
Could it be that the M3's strut towers are less prone to mushrooming not only because many of them come with a strut brace from the factory, but also because an M3 strut mount looks like this...

http://c1552172.r72.cf0.rackcdn.com/23071_x600.jpg

http://c1552172.r72.cf0.rackcdn.com/23069_x600.jpg

Versus a regular E46 one that looks like this?

http://c1552172.r72.cf0.rackcdn.com/209651_x600.jpg

http://c1552172.r72.cf0.rackcdn.com/209649_x600.jpg

The one on the M3 looks quite a bit beefier. This is a recent discovery for me. da. fuq.

TerraPhantm 12-09-2012 01:32 AM

I do believe they play a large role.

I don't think you can simply swap M3 strut mounts though. IIRC camber would be off, and they don't accept standard diameter springs (unlike non-M mounts)

I don't know if they're any stronger, but it looks like E30 mounts may fit.

Ruthlessone3k 12-09-2012 01:35 AM

This seems like a more likely culprit of mushrooming than the lack of a strut tower brace. I'm getting the rough road package soon and might look into reinforcing these while I'm at it

peytonracer4 12-09-2012 01:47 AM

Quote:

Originally Posted by Ruthlessone3k (Post 14963670)
This seems like a more likely culprit of mushrooming than the lack of a strut tower brace. I'm getting the rough road package soon and might look into reinforcing these while I'm at it

Wtf is the rough road package

Ruthlessone3k 12-09-2012 02:12 AM

Quote:

Originally Posted by peytonracer4 (Post 14963676)
Wtf is the rough road package

It' is basically just a metal plate that sandwiches between the top of the strut and the underside of the strut tower. From reading around it seems like these were standard equipment in eastern European countries where they are known for having rough roads.

you can get the here for $19.90 http://www.turnermotorsport.com/p-32...ates-pair.aspx

since my car is lowered and has stiffer suspension, I'm going to git them a try. It certainly can't hurt.

mkodama 12-09-2012 02:21 AM

Probably would help, since the aluminum of the non-m mount is incredibly soft, but the M3 mounts are also four times the price. Just flatten your strut towers if they are already bent with a 2x4 and a 5 pound sledge hammer and install the rough road package plates; much cheaper and easier unless you want to mix and match parts.

peytonracer4 12-09-2012 02:42 AM

Quote:

Originally Posted by Ruthlessone3k (Post 14963709)
It' is basically just a metal plate that sandwiches between the top of the strut and the underside of the strut tower. From reading around it seems like these were standard equipment in eastern European countries where they are known for having rough roads.

you can get the here for $19.90 http://www.turnermotorsport.com/p-32...ates-pair.aspx

since my car is lowered and has stiffer suspension, I'm going to git them a try. It certainly can't hurt.

I am very familiar with the plates and I've considered them myself. But I've NEVER heard them called the rough road package.

mkodama 12-09-2012 03:34 AM

Quote:

Originally Posted by peytonracer4 (Post 14963745)
I am very familiar with the plates and I've considered them myself. But I've NEVER heard them called the rough road package.

The correct term is "Poor Road Package" and for the front suspension it included a spacer between the strut bearing and strut tower, a reinforcement plate for the strut tower, and a blind rivet to hold the reinforcement plate in place.


Parts 12, 13, and 14

http://www.realoem.com/bmw/diagrams/l/d/432.png

Ruthlessone3k 12-09-2012 04:47 AM

Any idea where to get part #12 at? Cant seem to find it anywhere.

mkodama 12-09-2012 05:23 AM

Quote:

Originally Posted by Ruthlessone3k (Post 14963831)
Any idea where to get part #12 at? Cant seem to find it anywhere.

Do you really want to raise your suspension? :rofl:

Ruthlessone3k 12-09-2012 05:28 AM

Quote:

Originally Posted by mkodama (Post 14963841)
Do you really want to raise your suspension? :rofl:

Yeah, it sits way too low. I'm currently rubbing in the rear with 16's and the front will with 17's

Alex323Ci 12-09-2012 04:46 PM

Quote:

Originally Posted by peytonracer4 (Post 14963745)
I am very familiar with the plates and I've considered them myself. But I've NEVER heard them called the rough road package.

yes the plates are two components from the "Rough Road Package". but correct, the "re-inforcement plates" are not "thee" Rough Road Package
Quote:

Originally Posted by mkodama (Post 14963775)
The correct term is "Poor Road Package" and for the front suspension it included a spacer between the strut bearing and strut tower, a reinforcement plate for the strut tower, and a blind rivet to hold the reinforcement plate in place.

It's more commonly listed as "Rough Road Package" but true it's also listed within BMW as "Poor Road" as well.
http://tis.spaghetticoder.org/s/view.pl?1/10/98/80


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