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Go Back   E46Fanatics > Tuning & Tech > Suspension & Braking

Suspension & Braking
Have some questions about suspension or brake setups for your E46 BMW? Get all your answers here!

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Old 07-31-2008, 03:27 PM   #1
zeshon
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Exclamation Suspension Quick Reference Thread

Since we finally have a forum for suspension and brakes, it's time to crap it up with threads. First order of business is giving people a place to start. These are just a few things to get the ball rolling. Now that the E46 is a more affordable option for people, the community can only grow. We need quicker access to information so new people don't crap up the forum. This thread is for posting useful links to information about suspensions bother generally, and focused on the E46 chassis.

General Suspension Resources
E46 Suspension Information (Many thanks to JPR)
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Last edited by Solidjake; 01-18-2013 at 06:53 AM.
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Old 08-01-2008, 06:17 PM   #2
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very nice!
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Look at that subtle jet-black coloring. The tasteful thickness of it. Oh my God, it even has a 6mt.
S54 Valve Adjustment Spreadsheet & Info: http://dl.dropbox.com/u/28231781/S54...ent%20info.zip
S54 VANOS DIY Video: http://www.youtube.com/watch?v=9SkT2j3jsU0
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Old 08-03-2008, 11:24 AM   #3
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I wish I could edit so I could add more as I go...
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Old 08-03-2008, 02:48 PM   #4
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You can always PM a mod to edit it.
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Old 08-07-2008, 05:46 PM   #5
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Swaybar sizes - http://forum.e46fanatics.com/showthread.php?t=372138

Bilstein Shocks Explained - http://forum.e46fanatics.com/showthread.php?t=517995

Ride Height - http://forum.e46fanatics.com/showthread.php?t=492030

DIY Info -
Control Arm Replacement - http://forum.e46fanatics.com/showthread.php?t=421918
Toe Alignment - http://forum.e46fanatics.com/showthread.php?t=459889
Camber Measurement - http://forum.e46fanatics.com/showthread.php?t=523203

TIS Info -
BMW Spring/Strut/Shock Replacement Instructions - http://forum.e46fanatics.com/showthread.php?t=516827
Steering wheel jerking on rapid brake application - http://forum.e46fanatics.com/showthread.php?t=515143
Control Arm Ball Joint Info - http://forum.e46fanatics.com/showthread.php?t=515137
Broken Rear Spring TSB - http://forum.e46fanatics.com/showthread.php?t=496579
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Old 08-07-2008, 06:01 PM   #6
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great work guys! if you want to keep adding, I will add all the info to the initial post, and sticky both this thread and the brake info thread in this forum

keep up the great contributions!
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Old 08-07-2008, 09:14 PM   #7
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Here's some more suspension goodness -

Swaybar noise solutions - http://forum.e46fanatics.com/showthread.php?t=380005

Sway bar upgrades using factory BMW parts - http://forum.e46fanatics.com/showthread.php?t=371422

BMW Performance Suspension Kit - http://forum.e46fanatics.com/showthread.php?t=537216

What coilovers perform the best while not slamming the car itself? - http://forum.e46fanatics.com/showthread.php?t=539125

Bulletproofing your Suspension: What next? - http://forum.e46fanatics.com/showthread.php?t=523207

** simsima325 - consolidation into the top post would be beneficial, thanks for offering to take care of that
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Old 08-12-2008, 09:57 AM   #8
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Oh JPR, you're the man!
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Old 09-02-2008, 08:28 PM   #9
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Another goody - the epic thread on the correct way to seat the springs on the struts. The pictures expired in the first through post, but read the whole thing and you'll find them again - http://forum.e46fanatics.com/showthread.php?t=350079
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Old 09-08-2008, 11:14 PM   #10
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Here is a good thread for DIY KW installation.

http://forum.e46fanatics.com/showthr...9&highlight=kw
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Old 12-28-2008, 10:54 PM   #11
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Do I need a front/rear strut tower bar?
Short answer : No
Long answer : If you have a few hundred to burn, then go ahead. The front bar has some minute effect, as does the rear. Putting in a front bar looks cool, and will have little/no negative impact on your vehicle. 323/328 vehicles need updated strut hats with longer studs. Rear bars take up trunk space, and don't do much. You will get mixed reviews, but as a whole they won't net you any real benifits.
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Old 11-03-2009, 09:32 PM   #12
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where is the thread on how to get rid of the factory understeer? it had to do with alignment, camber, and toe adjustment. it was a good read, but now i can't find it.

edit; found it.
http://forum.e46fanatics.com/showthr...ory+understeer
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Old 06-22-2010, 11:57 AM   #13
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Toe-in or -out

I was looking at the alignment specs and the alignment sheet from my dealer and it appears that my car (2002 330Ci) has toe-out on both the front and rear axles. Is this correct? Every other car I have had had toe-in, espcially in the rear. I have used toe-out for track events but not on the street.

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Old 06-24-2010, 05:44 PM   #14
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Originally Posted by Bob Ramberg View Post
I was looking at the alignment specs and the alignment sheet from my dealer and it appears that my car (2002 330Ci) has toe-out on both the front and rear axles. Is this correct? Every other car I have had had toe-in, espcially in the rear. I have used toe-out for track events but not on the street.

Bob
Bob -
I believe you are misunderstanding the specs. Toe in is cited as a positive number, toe out is cited as a negative number. The toe specification for all E46's calls for toe-in front and rear.
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Old 06-26-2010, 10:27 AM   #15
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Thanks JPR for the quick response. I thought that would be the case but it pays to make sure. Unfortunately I now have to look for another cause of the squirrely handling that I have. I had the car aligned after I replaced the bushings and control arms. The car is a 2002 330ci with 55k miles, It has UUC rear trailing arm bushings and Powerflex front control arm bushings. I replaced the front control arms last summer. Tires are Goodyear F1 Asymetrical. The car trammels terribly. Uneven roads cause it to pull to the left or right, quite hard sometimes. In hard corners it is pretty stable. Not sure what the problem is.
Any suggestions where to look would be appreciated.
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Old 07-04-2010, 06:05 PM   #16
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Originally Posted by Bob Ramberg View Post
Thanks JPR for the quick response. I thought that would be the case but it pays to make sure. Unfortunately I now have to look for another cause of the squirrely handling that I have. I had the car aligned after I replaced the bushings and control arms. The car is a 2002 330ci with 55k miles, It has UUC rear trailing arm bushings and Powerflex front control arm bushings. I replaced the front control arms last summer. Tires are Goodyear F1 Asymetrical. The car trammels terribly. Uneven roads cause it to pull to the left or right, quite hard sometimes. In hard corners it is pretty stable. Not sure what the problem is.
Any suggestions where to look would be appreciated.
Just because you got the alignment done does not necessarily mean that you got a good alignment done. If you haven't done so already, check out the links to alignment info in this thread, then if you've got a copy of your alignment report, post it in a new thread and we'll take a look at it.
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Old 12-11-2010, 08:35 PM   #17
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I have 2002 330ci convertible and trying to replace the rear shocks. In the rrepair manual and couple of other sites say that we can reach the upper mount of the shock from the "top storage compartment". Where is it? Is at reachable from the trunk or where? Is it a big space and easy to work at?

Any help appaciated.

Thanks

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Old 03-22-2012, 07:12 PM   #18
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Best Coilovers for Sedans?

... Good thread
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Old 07-11-2012, 05:42 PM   #19
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I would argue with the post about not needing a strut tower bar, my passenger side pinch weld has a hairline crack and a friend just had both of this fail...

Popped in here to hopefully find some information, I'll keep on searching...
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Old 10-04-2012, 02:25 AM   #20
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Hi.. I'm no expert but I have had cars geo'd for track which can cause darting and / or tramlining

Check your settings against recommendations, specially camber and toe.

....and if you have lowered it a lit check caster

Check everything ;-)

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