BMW M3 Suspension Parts

Can't decide on what factory or dealer options to go with?
Not sure what a specific option does?
Post your thoughts in here

Moderators: Rich196, babybmwadmin, marco_polo, Producethis, Lambster

punky
Enthusiastic Member
Enthusiastic Member
Posts: 530
Joined: Thu Dec 10, 2009 9:38 pm

BMW M3 Suspension Parts

Post by punky » Thu Oct 07, 2010 6:07 pm

ARB (front)
31352283515 - ARB x 1
31352283516 - rubber mount lower section x 2
31352283517 - rubber mount upper section x 2
31352283037 - stabilizer support x 2
31352283441 (Swing support - left) - Sam1er confirmed that the existing ones can be reused.
31352283442 (Swing support - right) - Sam1er confirmed that the existing ones can be reused.
33326768884 (Hexagon nuts, 4x)

Image

Tension struts (Zugstrebe Vorderachsträger):

31102283575 (left)
31102283576 (right)

Image

Lower wishbone / control arms (Querlenker Vorderachsträger)

These add some degrees of camber, an alignment of the suspension after the install is therefore mandatory. A different xenon light regulation rod is needed.

31102283577 (left)
31102283578 (right)
37142283867 (xenon regulation rod)

Image

Rear:

Rear subframe bushings (Gummilager Hinterachsträger)

The soft stock rear subframe bushings are replaced with stiffer, high performance bushings for a more predictable handling and more control.

33312283382 (front, 2x)
33312283383 (rear, 2x)

Image

Rear guide rods (Führungslenker Hinterachsträger):

Original guide rods were made to deflect under load, a bad thing for good handling and traction. The M3 guide rods are made of all aluminum, a lightweight component thereby reducing wear and tear on other, more critical parts (rear subframe, control arm bushings etc). Each guide rod weighs just over 1.5 lbs making for a total of ~3 lbs for both parts (stock guide rods weigh 2.1 lbs each). Bushing deflection with a rubber material at one end is replaced by a sealed joint for deflection and noise free operation. Bushing deflection is unwanted because it leads to excess suspension movement. This is bad for handling and traction due to constant camber and toe changes. Plus, any power from the engine can take longer to get to the ground because it has to windup the bushing first.

33322283547 (left)
33322283548 (right)

Image

Rear upper links / wishbones (Querlenker Hinterachsträger)

Original upper links were made to deflect under load, a bad thing for good handling and traction. The M3 links are made of all aluminum, a lightweight component thereby reducing wear and tear on other, more critical parts (rear subframe, control arm bushings, etc). Each link weighs just over 1.7 lbs making for a total of ~3.4 lbs for both parts (stock guide link weigh 2.5 lbs each or 5 lbs for both). A weight savings of over 1.5 lbs from the rear suspension.

33322283545 (left)
33322283546 (right)

Image

N.B. I have not fitted these parts myself but some say that they are very worth and remove the rear end float that some grumble about. Regarding the swing supports of the ARBs, I am not entirely sure that they are needed but I decided to post all the parts including hex nuts. First hand experience is appreciated in this thread so that we can help others :) Feel free to criticize/correct me. Mods/admins can put this as sticky if they think that it can help others.
Last edited by punky on Fri Oct 08, 2010 1:29 pm, edited 2 times in total.
08-120d ///M Sport - 207M - Vredestein Ultrac Sessanta - Black Boston Leather - Bluefin -Aero Roof spoiler - BMWP Pedals - Depo Headlights - BMW Sport antenna - Philips X-treme Power H7 - Philips Silvervision

User avatar
Rephlex
Experienced Member
Experienced Member
Posts: 395
Joined: Thu Aug 09, 2007 11:25 pm
Location: Herts, UK

Re: BMW M3 Suspension Parts

Post by Rephlex » Thu Oct 07, 2010 8:24 pm

I have fitted these parts to my car;

Tyres - Continental SportContact 3 225/35/19" and 255/30/19" non-runflat
Wheels - Hartge Classic 2 19" 8J & 9J
Dampers - Stock M-Sport
Springs - Hartge -25mm
ARB's - Hartge anti roll bar kit front & rear
Other - M3 front control arms and rear subframe bush kit.

The work was carried out by Birds. I had everything except the M3 parts fitted 3 years ago. The M3 parts went on about a year ago. If the M3 parts had been readily available and known to be compatible they may have been considered against the Hartge ARB's. The Hartge ARB's have a massive effect in reducing body roll and increasing traction.

I cannot recommend the M3 parts enough.

At the front I had the camber pins knocked out and the tension struts fitted. The steering feels sharper and the car is much more stable under hard braking. Kevin Bird felt having done the mod a few times on e92 and e81/87 the lower wishbone control arms were unneccessary. The two parts lined up are identical in length, the M3 part having a more solid bush. There is a lot of difference of opinion on this and most who have had it done rave about it. I've gone with Kevin's experienced advice but may yet experiment if funds allow. However the Birds B spring/damper suspension kit will take priority.

The rear subframe bush mod has an immediate and noticeable effect in tightening up the rear end and making the car sharper without introducing undue harshness. The standard bushes have voids and are very slack I think in part to introduce compliance to compensate for RFTs. The M3 bushes are solid rubber. The car reacts to inputs much more immediately and feels more planted.
'05 130i M Sport 5dr with Birds, Hartge, AP Racing and Quaife goodies

EvoGlynn
Too Much Time To Waste Member
Too Much Time To Waste Member
Posts: 2245
Joined: Mon Jun 23, 2008 8:55 am
Location: Chelmsford, Essex
Contact:

Re: BMW M3 Suspension Parts

Post by EvoGlynn » Thu Oct 07, 2010 9:01 pm

Thanks for posting the pics and part numbers :)

However, Rephlex - you mention that the lower control arms are the same length? Or is it the upper ones that do this? How can the alignment be so far out if they are the same length?

I am sure I have seen a pic on 1addicts of the side by side and the 1ers were shorter. Gonna search.
STEALTH BOMBER130i Evolve | Brembo | KW | BMW Performance with a touch of Alcantara and Carbon - GONE AND HUGELY MISSED - but E90 M3 on the cards :-(

User avatar
Rephlex
Experienced Member
Experienced Member
Posts: 395
Joined: Thu Aug 09, 2007 11:25 pm
Location: Herts, UK

Re: BMW M3 Suspension Parts

Post by Rephlex » Thu Oct 07, 2010 9:21 pm

Interested to see what you can dig up Glynn. I'm going on what I was told. They did however confirm that after fitting the M3 control arm significant alignment is required as we have all read. I'll be in at Birds tomorrow so if you can find anything I'd appreciate it.
'05 130i M Sport 5dr with Birds, Hartge, AP Racing and Quaife goodies

EvoGlynn
Too Much Time To Waste Member
Too Much Time To Waste Member
Posts: 2245
Joined: Mon Jun 23, 2008 8:55 am
Location: Chelmsford, Essex
Contact:

Re: BMW M3 Suspension Parts

Post by EvoGlynn » Thu Oct 07, 2010 9:28 pm

Here you go mate - I thought so....

The link......

http://www.1addicts.com/forums/showthre ... ntrol+arms

Image
STEALTH BOMBER130i Evolve | Brembo | KW | BMW Performance with a touch of Alcantara and Carbon - GONE AND HUGELY MISSED - but E90 M3 on the cards :-(

punky
Enthusiastic Member
Enthusiastic Member
Posts: 530
Joined: Thu Dec 10, 2009 9:38 pm

Re: BMW M3 Suspension Parts

Post by punky » Thu Oct 07, 2010 9:33 pm

They are longer. In fact they are quite useful for those who prefer some more -ve camber.
08-120d ///M Sport - 207M - Vredestein Ultrac Sessanta - Black Boston Leather - Bluefin -Aero Roof spoiler - BMWP Pedals - Depo Headlights - BMW Sport antenna - Philips X-treme Power H7 - Philips Silvervision

User avatar
Rephlex
Experienced Member
Experienced Member
Posts: 395
Joined: Thu Aug 09, 2007 11:25 pm
Location: Herts, UK

Re: BMW M3 Suspension Parts

Post by Rephlex » Thu Oct 07, 2010 9:36 pm

Thanks guys I'll post up some feedback tomorrow.
'05 130i M Sport 5dr with Birds, Hartge, AP Racing and Quaife goodies

mef
Junior Member
Junior Member
Posts: 35
Joined: Sat Jul 17, 2010 8:33 am

Re: BMW M3 Suspension Parts

Post by mef » Thu Oct 07, 2010 9:50 pm

Not only are they longer but the M3 ones have a spherical bearing at the inner end rather than the rubber bush.

The standard 1 Series tension struts have a hydraulically damped bush at the front end whereas the M3 ones have a solid rubber bush, this should reduce any castor angle changes during acceleration and braking and thereby make the steering sharper too.

Martin

punky
Enthusiastic Member
Enthusiastic Member
Posts: 530
Joined: Thu Dec 10, 2009 9:38 pm

Re: BMW M3 Suspension Parts

Post by punky » Fri Oct 08, 2010 7:18 am

Original post updated: now includes rear parts.
08-120d ///M Sport - 207M - Vredestein Ultrac Sessanta - Black Boston Leather - Bluefin -Aero Roof spoiler - BMWP Pedals - Depo Headlights - BMW Sport antenna - Philips X-treme Power H7 - Philips Silvervision

User avatar
Sam1er
Enthusiastic Member
Enthusiastic Member
Posts: 1072
Joined: Fri Jan 23, 2009 4:45 pm

Re: BMW M3 Suspension Parts

Post by Sam1er » Fri Oct 08, 2010 11:32 am

Swing supports for ARB's not required. M3 ones are shorter and hence will not fit, original ones can be reused and work perfectly :)
Also could mods make this into a sticky? Valuable info in this :)
120d sport E87 2004 Sparkling Graphite - work time - Now gone but not forgotten
325i se E90 - Now gone also
330d se E91 - New work horse
645ci E64 Silver - play time

punky
Enthusiastic Member
Enthusiastic Member
Posts: 530
Joined: Thu Dec 10, 2009 9:38 pm

Re: BMW M3 Suspension Parts

Post by punky » Fri Oct 08, 2010 1:30 pm

Sam1er wrote:Swing supports for ARB's not required. M3 ones are shorter and hence will not fit, original ones can be reused and work perfectly :)
Also could mods make this into a sticky? Valuable info in this :)
Updated original post to include your comment :)
08-120d ///M Sport - 207M - Vredestein Ultrac Sessanta - Black Boston Leather - Bluefin -Aero Roof spoiler - BMWP Pedals - Depo Headlights - BMW Sport antenna - Philips X-treme Power H7 - Philips Silvervision

Anthony
Too Much Time To Waste Member
Too Much Time To Waste Member
Posts: 2747
Joined: Thu May 03, 2007 7:01 pm

Re: BMW M3 Suspension Parts

Post by Anthony » Fri Oct 08, 2010 1:57 pm

EvoGlynn wrote:Here you go mate - I thought so....

The link......

http://www.1addicts.com/forums/showthre ... ntrol+arms

Image

Good detective work! What is the estimated increase in length and what might be the predicted change in camber? I hazard a guess of around an inch. Or has anyone had this measured on an alignment machine? Small amounts of camber change might be beneficial but larger angles of change might be counter productive on a road car.

punky
Enthusiastic Member
Enthusiastic Member
Posts: 530
Joined: Thu Dec 10, 2009 9:38 pm

Re: BMW M3 Suspension Parts

Post by punky » Fri Oct 08, 2010 2:19 pm

If I'm not mistaken 0.5-0.75 degrees.
08-120d ///M Sport - 207M - Vredestein Ultrac Sessanta - Black Boston Leather - Bluefin -Aero Roof spoiler - BMWP Pedals - Depo Headlights - BMW Sport antenna - Philips X-treme Power H7 - Philips Silvervision

EvoGlynn
Too Much Time To Waste Member
Too Much Time To Waste Member
Posts: 2245
Joined: Mon Jun 23, 2008 8:55 am
Location: Chelmsford, Essex
Contact:

Re: BMW M3 Suspension Parts

Post by EvoGlynn » Fri Oct 08, 2010 6:31 pm

You can call me Officer Roberts :lol:

From everything I have read - these mods give the perfect camber for fast road without tyre wear issues.

Next on my list for sure.
STEALTH BOMBER130i Evolve | Brembo | KW | BMW Performance with a touch of Alcantara and Carbon - GONE AND HUGELY MISSED - but E90 M3 on the cards :-(

mef
Junior Member
Junior Member
Posts: 35
Joined: Sat Jul 17, 2010 8:33 am

Re: BMW M3 Suspension Parts

Post by mef » Mon Oct 11, 2010 8:01 pm

The ARB in the first post is the 26.5mm one, the 28mm M3 one is 3152283965, this requires the same mounting brackets but different size rubbers to take the larger diameter: 31352283967 & 968 (2 off each reqd)

Martin

Post Reply

Return to “BMW OEM Options & Accessories”