Sub frame bushings

JSILVER135I · 10-02-2012, 08:12 AM

So I've noticed that upgrading to the m3 subframe bushings seems to be a popular mod on here. Can someone tell me what they are and where they go? How many are there? I guess I'm just confused on what the subframe is classified as really?

maupineda · 10-02-2012, 08:56 AM

I am installing poweflex inserts next weekend. a lot easier to do and no special tools needed. I read in e90post they give 80% the benefit of the m3 bushings. I am also installing new powerflex bushing on in the toe arms.

LtDo · 10-02-2012, 09:16 AM

Quote:

Originally Posted by JSILVER135I

So I've noticed that upgrading to the m3 subframe bushings seems to be a popular mod on here. Can someone tell me what they are and where they go? How many are there? I guess I'm just confused on what the subframe is classified as really?

As you can see on the picture below (from realoem.com), your rear wheels are fixed on the suspension which (through the links) is connected (see picture below in grey) to a "subframe":

Here you can see the whole subframe and you can see on each corner a bushing (number 2 & 3) which connects this subframe to the structure of the car.

As you can imagine, each time that you turn, the lateral forces are transmitted through this bushing to the car. It means that if this original bushings are too soft, this subframe can move (relative to the car) and give an impression that the suspension "floats" on the road.

The M3 bushings (I'm busy with the installation) are much stiffer than the original ones and this drastically reduces the move of the suspension. So your car is more "on rails" and follow better and nearly immediately your orders.

AnooooOH · 10-03-2012, 08:29 AM

can you install them plug & play?

Focusedintntions · 10-03-2012, 08:39 AM

Quote:

Originally Posted by AnooooOH

can you install them plug & play?

Well technically they are "plug and play". However, you'll still need some type of a bushing press to get the old ones out and put the new ones in. This type of job is best left to a pro shop.

Dackelone · 10-03-2012, 08:44 AM

Dackel's replacement of rear suspension OE bushings with M3 ones…
http://www.1addicts.com/forums/showthread.php?t=638163

syenisch · 10-03-2012, 09:43 PM

I made a detailed DIY for this. Check the DIY forum.

10-02-2012, 08:12 AM	#1
JSILVER135I Private 25 Rep 81 Posts Drives: SILVER 135I, MSPORT PKG Join Date: Feb 2010 Location: TORONTO, CANADA iTrader: (0)	Sub frame bushings So I've noticed that upgrading to the m3 subframe bushings seems to be a popular mod on here. Can someone tell me what they are and where they go? How many are there? I guess I'm just confused on what the subframe is classified as really?
	Appreciate 0 Tweet Quote

10-02-2012, 08:56 AM	#2
maupineda Captain 456 Rep 975 Posts Drives: E86 Z4MC Join Date: Jul 2012 Location: Detroit, MI iTrader: (3)	I am installing poweflex inserts next weekend. a lot easier to do and no special tools needed. I read in e90post they give 80% the benefit of the m3 bushings. I am also installing new powerflex bushing on in the toe arms.
	Appreciate 0 Quote

10-03-2012, 08:29 AM	#4
AnooooOH Major 170 Rep 1,215 Posts Drives: M235i Join Date: May 2009 Location: Germoney iTrader: (0)	can you install them plug & play? __________________ MANHART MH2 400 Partout FS: MANHART MHtronik Tuning Box http://www.2addicts.com/forums/showt...5#post18819345
	Appreciate 0 Quote

10-03-2012, 08:44 AM	#6
Dackelone European Editor 10589 Rep 22,992 Posts Drives: N54 e82 Join Date: Feb 2010 Location: Bayern, Germany iTrader: (1)	Dackel's replacement of rear suspension OE bushings with M3 ones… http://www.1addicts.com/forums/showthread.php?t=638163 __________________ Dackel's European Delivery Museum Guide
	Appreciate 0 Quote

10-03-2012, 09:43 PM	#7
syenisch Captain 111 Rep 810 Posts Drives: 2015 435i Gran Coupe Join Date: Jun 2008 Location: Winter Garden, FL iTrader: (1)	I made a detailed DIY for this. Check the DIY forum.
	Appreciate 0 Quote