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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > M3 Control arms



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      03-26-2020, 10:30 PM   #1
213e90n51
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M3 Control arms

I have had my car for 4 years now and it came with upper and lower m3 control arms. Everything is stock but I want to know how do I use these upgrades to the best of the cars ability? WHat did it do to the chasis and what alignment should I run with this modifcation?: I have a 2009 328i e90. Bilstein b4s and 18 inch style 197s wrapped in pilot sport as3+
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      03-28-2020, 01:43 AM   #2
213e90n51
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      03-28-2020, 02:31 AM   #3
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M3 front arms gave you about 0.75deg (edit: just installed mine and got 0.45deg per side) extra negative camber, and firmed up the bushings a lot compared with the stock arms.

Run stock alignment (ignoring front camber) and you'll be fine. If you care a bit less about tyre wear, switch to around 0 front toe.

Last edited by Tambohamilton; 04-05-2020 at 06:44 AM..
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      03-28-2020, 09:34 AM   #4
mweisdorfer
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Quote:
Originally Posted by 213e90n51 View Post
I have had my car for 4 years now and it came with upper and lower m3 control arms. Everything is stock but I want to know how do I use these upgrades to the best of the cars ability? WHat did it do to the chasis and what alignment should I run with this modifcation?: I have a 2009 328i e90. Bilstein b4s and 18 inch style 197s wrapped in pilot sport as3+
The only thing you could do to maximize the M3 control arms would be to upgrade suspension parts like shocks, struts, rear subframe bushings, differential bushings, better sway bars etc.
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      03-28-2020, 12:07 PM   #5
213e90n51
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Quote:
Originally Posted by Tambohamilton View Post
M3 front arms gave you about 0.75deg extra negative camber, and firmed up the bushings a lot compared with the stock arms.

Run stock alignment (ignoring front camber) and you'll be fine. If you care a bit less about tyre wear, switch to around 0 front toe.
Awsome thanks I do like to drive and hit corners pretty hard!
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