Recommendations for Adjustable Rear Control Arms

[Geoff.T]

I've used the steel SPC camber arms on my old car. They're cheap and durable on track. My only gripe was they're not the easiest to adjust. That being said, I have GCs on my current M3 and couldn't be happier. The adjustment point is easily accessible.

[r4dr]

Much like the modern shift in RTAB design (Dinan, SDW, Fall Line, etc) the sealed monoball are the best of both worlds. Last I checked CSL camber arms were NLA but they were about $700 per side before and were known to bend easily.

Bimmerworld and Ground Control are the only ones I know of who offer a comparable product with sealed bearing. I will probably be going with one of those unless Turner comes out with their own version...

And between those two, it looks like BW has adjusters on both ends, whereas GC has them only on the outboard end. I've read that having only the outboard adjustment point makes it easier to adjust, is this correct?

[oceansize]

Thanks fellas. I ended up ordering the GC with the bearing.

[jvit27]

And between those two, it looks like BW has adjusters on both ends, whereas GC has them only on the outboard end. I've read that having only the outboard adjustment point makes it easier to adjust, is this correct?

Correct. Read my previous post again, I explained that is why I went with Turner for my E36.

[r4dr]

Correct. Read my previous post again, I explained that is why I went with Turner for my E36.

Totally missed that, thanks! I'll be going with GC as well then, I think.

[liam821]

Little late here, I have GC lower arms on my car and they've been fine, they're easy to adjust, don't move after being adjusted, and look nice. Would buy again.

[Obioban]

I've had the Turner (rubber bushing) arms on my E36 for years and have been very happy with them. The single outer jam nut design makes them easier to adjust than SPC, etc that have two jamnuts on either end. They also offer individual replacement parts should you need them.



^^ Little known detail.

Much like the modern shift in RTAB design (Dinan, SDW, Fall Line, etc) the sealed monoball are the best of both worlds. Last I checked CSL camber arms were NLA but they were about $700 per side before and were known to bend easily.

Bimmerworld and Ground Control are the only ones I know of who offer a comparable product with sealed bearing. I will probably be going with one of those unless Turner comes out with their own version...

Any idea who makes the monoball in GCs?

I'd really like a monoball arm with a lemforder or similar quality bearing. Without even looking I'm sure BW is using a garbage bearing, because they always do. I wonder about GC...

[oceansize]

Any idea who makes the monoball in GCs?

I'd really like a monoball arm with a lemforder or similar quality bearing. Without even looking I'm sure BW is using a garbage bearing, because they always do. I wonder about GC...

Damn it obi.. Now you ask that question after I order. LoL. Oh well, since I just ordered I will ask and see if they answer.

[Obioban]

Damn it obi.. Now you ask that question after I order. LoL. Oh well, since I just ordered I will ask and see if they answer.

On their site they say OE... just like they did with their monoball RTABs until I took them apart and proved that they weren't.

I'm sure they'll say OE here, too, whether or not they actually are.

... I'm still tempted to get a set

[oceansize]

Response from GC via email:

That is actually a bearing made to fit the 5/6/7/X series BMWs, the ones we currently have in stock are a combination of Lemforder and Delphi, I can't say for sure which ones your arms have, but it's one of those.

[r4dr]

It looks a lot like this Lemforder part (33326767748):



RealOEM cross references to this list:

5' E39 (02/1995 — 12/2003)
5' E60 (12/2001 — 12/2009)
5' E60 LCI (10/2005 — 12/2009)
5' E61 (10/2002 — 02/2007)
5' E61 LCI (11/2005 — 05/2010)
6' E63 (05/2002 — 07/2010)
6' E63 LCI (04/2006 — 07/2010)
6' E64 (09/2002 — 07/2010)
6' E64 LCI (04/2006 — 07/2010)
7' E38 (07/1993 — 07/2001)
7' E65 (02/2000 — 07/2008)
7' E66 (06/2000 — 07/2008)
X5 E53 (10/1998 — 09/2006)
Z8 E52 (12/1998 — 07/2003)

[HassanEido]

Tms adjustables are pretty stout 👍

[BMWahba]

Bumping this because I'm curious as to hearing some feedback on Rogue's design for their ARCA.


https://www.rogueengineering.com/Rog...ion_p_289.html

Only one I've seen like it, and seems to only have the one outboard adjustment end.

[Obioban]

I've had the Turner (rubber bushing) arms on my E36 for years and have been very happy with them. The single outer jam nut design makes them easier to adjust than SPC, etc that have two jamnuts on either end. They also offer individual replacement parts should you need them.



^^ Little known detail.

Much like the modern shift in RTAB design (Dinan, SDW, Fall Line, etc) the sealed monoball are the best of both worlds. Last I checked CSL camber arms were NLA but they were about $700 per side before and were known to bend easily.

Bimmerworld and Ground Control are the only ones I know of who offer a comparable product with sealed bearing. I will probably be going with one of those unless Turner comes out with their own version...

Bending easily is a benefit for this application— prevents the car chassis from getting damaged if you slide sideways into something. That’s why the stock arms all do.

[elbert]

Without even looking I'm sure BW is using a garbage bearing, because they always do. I wonder about GC...

GC uses garbage as well. Had issues with bearings in their RSM. I think I have some bearing problems with their articulating spring perch as well, but I haven't had time to look.

I've heard they have good customer service, but my experience has been the opposite. I can't never get a hold of anyone there, phone or email. All I wanted to know was the stupid bearing size so I could replace them.