F8x M3/M4 lower control arms

Bee Pee · 06-23-2014, 03:32 AM

Hi,

In pursuit of more camber but using OEM parts has anyone got anymore info on use of F8x M3/M4 LCA and TS on F2x series front suspension to push bottom of hub carrier further outwards ?

Attached photo of underside of new M3 - looks v similar.....

Comments/advice most welcome.....

rwalker · 06-23-2014, 11:07 AM

I'm watching realoem.com on a daily basis. I'm sure Harold at HP will jump on this as soon as feasible.

FakePockets · 07-15-2014, 04:55 AM

Quote:

Originally Posted by rwalker

I'm watching realoem.com on a daily basis. I'm sure Harold at HP will jump on this as soon as feasible.

Bump, the number are now available! Looks to be about $140 each. Someone in the US get on this first before I do!

http://realoem.com/bmw/showparts.do?...23&hg=31&fg=05

Bee Pee · 07-16-2014, 11:01 AM

Looking at Realoem, subframes between F2x and F8x are different and F8x LCA / TS are rubber bushed as opposed to hydraulic for F2x. Same as Exx chassis upgrade.

Would need to see the components side by side to see to measure if bush housings are same size [differing subframe may not matter] and visually check if their geometry are essentially the same albeit the F8x LCA and TS are slightly longer than their F2x equivalents.

Who's going to volunteer ??

Where's Harold at HPA on whether this upgrade is viable and worthwhile ???

rwalker · 07-16-2014, 04:36 PM

My parts department quoted me $871 to get the parts for comparison, said they'd take 'em back if they don't fit, but want to do the test fitting in their shop.

There aren't many of the M3/4 control arms in the world, just a handful in Germany, so lead time is 3-4 weeks.

Bee Pee · 07-16-2014, 05:14 PM

Quote:

Originally Posted by rwalker

My parts department quoted me $871 to get the parts for comparison

Are you going to do it ?

Can you list part numbers for $871 you were quoted by your parts guy?

Thanks

rwalker · 07-16-2014, 05:37 PM

My quote was for just the control arms:

31122284529
31122284530
31122284531
31122284532

Some screwing around with headlight levelers will also be required. I'm not sure whether I'm going to do it or wait for an enterprising shop.

GSR Technik · 10-24-2014, 12:28 PM

Unfortunately our 228i is out getting wrapped at the moment but when it comes back I'll be sure to compare it to our M4 and get measurements.

Bee Pee · 10-24-2014, 01:14 PM

Great. Look forward to reading your findings. Thanks in advance.

GSR Technik · 11-05-2014, 01:29 PM

Sorry for the delay guys. The 228i back at the shop but now the M4 is out at SEMA. When it comes back I'll get them compared.

Bee Pee · 11-09-2014, 01:48 PM

No problem, look fwd to reading about your findings.

rwalker · 11-27-2014, 06:21 PM

updates?

GSR Technik · 12-02-2014, 04:19 PM

With busy schedules for both cars, we haven't had a chance to pull the M4 arms off and fit them to the 2-series yet. When we do, the plan is to do a full write-up and measure the change of camber etc.

So far, all I have is the rough measurement of the M4 arms being approx 1/2" longer. This should equate to about 1 degree of additional camber.

Bee Pee · 12-02-2014, 05:18 PM

Many thanks for the feedback. Subscribed and looking fed to reading more about your findings, parts used and any tips to retrofit them if it works out !

Bee Pee · 12-20-2014, 06:27 AM

Quote:

Originally Posted by GSR Autosport

With busy schedules for both cars, we haven't had a chance to pull the M4 arms off and fit them to the 2-series yet. When we do, the plan is to do a full write-up and measure the change of camber etc.

So far, all I have is the rough measurement of the M4 arms being approx 1/2" longer. This should equate to about 1 degree of additional camber.

Any update on the full write up ?

GSR Technik · 01-06-2015, 05:11 PM

Ok, we finally have some lift time scheduled for this project on Thursday. I'll try and post it up right away once we get it done. Thanks for the patience!

rwalker · 01-14-2015, 03:27 PM

bump for updates

GSR Technik · 01-15-2015, 07:22 PM

Alright guys thanks for the patience on this project. We finally found some time to get both our 228i and M4 project cars up on the lift at the same time to swap the front lower control arms to test fitment and measure the camber change that can be had by using the M3/M4 part on the standard F22 or F30 chassis. Check out the full write-up here:
http://www.2addicts.com/forums/showthread.php?t=1079766

Let me know if I can answer any questions. It is as expected, a simple bolt in swap and adds about 1.2 degrees of camber to the front.

06-23-2014, 03:32 AM	#1
Bee Pee Brigadier General 1776 Rep 4,512 Posts Drives: AW M2 DCT Join Date: Jun 2010 Location: SW London iTrader: (3)	F8x M3/M4 lower control arms - tension struts Hi, In pursuit of more camber but using OEM parts has anyone got anymore info on use of F8x M3/M4 LCA and TS on F2x series front suspension to push bottom of hub carrier further outwards ? Attached photo of underside of new M3 - looks v similar..... Comments/advice most welcome..... Attached Images __________________ Fettled M135i EB AT then AW M2 DCT - both gone but not forgotten: Current '22 X3M LCI.. Last edited by Bee Pee; 06-23-2014 at 03:38 AM..
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06-23-2014, 11:07 AM	#2
rwalker Major 330 Rep 1,084 Posts Drives: the wheels off Join Date: Nov 2006 Location: San Diego, CA iTrader: (1)	I'm watching realoem.com on a daily basis. I'm sure Harold at HP will jump on this as soon as feasible.
	Appreciate 0 Quote

07-16-2014, 11:01 AM	#4
Bee Pee Brigadier General 1776 Rep 4,512 Posts Drives: AW M2 DCT Join Date: Jun 2010 Location: SW London iTrader: (3)	Looking at Realoem, subframes between F2x and F8x are different and F8x LCA / TS are rubber bushed as opposed to hydraulic for F2x. Same as Exx chassis upgrade. Would need to see the components side by side to see to measure if bush housings are same size [differing subframe may not matter] and visually check if their geometry are essentially the same albeit the F8x LCA and TS are slightly longer than their F2x equivalents. Who's going to volunteer ?? Where's Harold at HPA on whether this upgrade is viable and worthwhile ??? __________________ Fettled M135i EB AT then AW M2 DCT - both gone but not forgotten: Current '22 X3M LCI..
	Appreciate 0 Quote

07-16-2014, 04:36 PM	#5
rwalker Major 330 Rep 1,084 Posts Drives: the wheels off Join Date: Nov 2006 Location: San Diego, CA iTrader: (1)	My parts department quoted me $871 to get the parts for comparison, said they'd take 'em back if they don't fit, but want to do the test fitting in their shop. There aren't many of the M3/4 control arms in the world, just a handful in Germany, so lead time is 3-4 weeks.
	Appreciate 0 Quote

07-16-2014, 05:37 PM	#7
rwalker Major 330 Rep 1,084 Posts Drives: the wheels off Join Date: Nov 2006 Location: San Diego, CA iTrader: (1)	My quote was for just the control arms: 31122284529 31122284530 31122284531 31122284532 Some screwing around with headlight levelers will also be required. I'm not sure whether I'm going to do it or wait for an enterprising shop.
	Appreciate 0 Quote

10-24-2014, 12:28 PM	#8
GSR Technik First Lieutenant 463 Rep 383 Posts Drives: F13 M6 \| E92 M3 \| '15 Mustang Join Date: Jul 2014 Location: Anaheim, California iTrader: (0)	Unfortunately our 228i is out getting wrapped at the moment but when it comes back I'll be sure to compare it to our M4 and get measurements.
	Appreciate 0 Quote

10-24-2014, 01:14 PM	#9
Bee Pee Brigadier General 1776 Rep 4,512 Posts Drives: AW M2 DCT Join Date: Jun 2010 Location: SW London iTrader: (3)	Great. Look forward to reading your findings. Thanks in advance.
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11-05-2014, 01:29 PM	#10
GSR Technik First Lieutenant 463 Rep 383 Posts Drives: F13 M6 \| E92 M3 \| '15 Mustang Join Date: Jul 2014 Location: Anaheim, California iTrader: (0)	Sorry for the delay guys. The 228i back at the shop but now the M4 is out at SEMA. When it comes back I'll get them compared.
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11-09-2014, 01:48 PM	#11
Bee Pee Brigadier General 1776 Rep 4,512 Posts Drives: AW M2 DCT Join Date: Jun 2010 Location: SW London iTrader: (3)	No problem, look fwd to reading about your findings. __________________ Fettled M135i EB AT then AW M2 DCT - both gone but not forgotten: Current '22 X3M LCI..
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11-27-2014, 06:21 PM	#12
rwalker Major 330 Rep 1,084 Posts Drives: the wheels off Join Date: Nov 2006 Location: San Diego, CA iTrader: (1)	updates?
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12-02-2014, 04:19 PM	#13
GSR Technik First Lieutenant 463 Rep 383 Posts Drives: F13 M6 \| E92 M3 \| '15 Mustang Join Date: Jul 2014 Location: Anaheim, California iTrader: (0)	With busy schedules for both cars, we haven't had a chance to pull the M4 arms off and fit them to the 2-series yet. When we do, the plan is to do a full write-up and measure the change of camber etc. So far, all I have is the rough measurement of the M4 arms being approx 1/2" longer. This should equate to about 1 degree of additional camber.
	Appreciate 0 Quote

12-02-2014, 05:18 PM	#14
Bee Pee Brigadier General 1776 Rep 4,512 Posts Drives: AW M2 DCT Join Date: Jun 2010 Location: SW London iTrader: (3)	Many thanks for the feedback. Subscribed and looking fed to reading more about your findings, parts used and any tips to retrofit them if it works out ! __________________ Fettled M135i EB AT then AW M2 DCT - both gone but not forgotten: Current '22 X3M LCI..
	Appreciate 0 Quote

01-06-2015, 05:11 PM	#16
GSR Technik First Lieutenant 463 Rep 383 Posts Drives: F13 M6 \| E92 M3 \| '15 Mustang Join Date: Jul 2014 Location: Anaheim, California iTrader: (0)	Ok, we finally have some lift time scheduled for this project on Thursday. I'll try and post it up right away once we get it done. Thanks for the patience!
	Appreciate 0 Quote

01-14-2015, 03:27 PM	#17
rwalker Major 330 Rep 1,084 Posts Drives: the wheels off Join Date: Nov 2006 Location: San Diego, CA iTrader: (1)	bump for updates
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01-15-2015, 07:22 PM	#18
GSR Technik First Lieutenant 463 Rep 383 Posts Drives: F13 M6 \| E92 M3 \| '15 Mustang Join Date: Jul 2014 Location: Anaheim, California iTrader: (0)	Alright guys thanks for the patience on this project. We finally found some time to get both our 228i and M4 project cars up on the lift at the same time to swap the front lower control arms to test fitment and measure the camber change that can be had by using the M3/M4 part on the standard F22 or F30 chassis. Check out the full write-up here: http://www.2addicts.com/forums/showthread.php?t=1079766 Let me know if I can answer any questions. It is as expected, a simple bolt in swap and adds about 1.2 degrees of camber to the front.
	Appreciate 0 Quote