Recommendations for Adjustable Rear Control Arms

[jet_dogg]

Got these awhile back.

[AussieE46M3]

To add some info for any others going through a similar thought process, you can fit rod end boots to spherical rod ends to seal them form the elements creating something similar to OE ball joints (self lubricated teflon and sealed). Grit is a big killer of spherical bearings so it's a great option for street driven cars.

It's an option for the camber arms from CMP that are both stronger & lighter than stock arms with a stainless jack screw so adjustment is made at the upright end of the arm.

https://cmpautoengineering.com/colle...le-camber-arms

[jdamore44]

I was considering the Steel Eibachs (Eibach 5.67110K) as the Aluminum version is twice the price. Am I wrong in thinking that these are a little easier to adjust then some others?
EDIT: I see the SPC's are pretty much identical and are a few bucks cheaper... But the eibachs will have the FCP warranty...
EDIT 2: Now I'm seeing the Turner setup is only 275 right now. Seems like a great deal!
EDIT 3: I got the TURNERS.

[eacmen]

Had email out to GC saturday night for replacement bearing and its already been shipped.

+1 for Bilstein being a pita to deal with for parts. Never again.

[simonnim]

I had the opposite experience with GC. I own their street coil overs and their ARCAs with bearing. They have always responded to my emails before and post-purchase. I asked them about the bearing they use in their ARCA and said it would be either Lemforder or Delphi. Unlike Obi I didn't tear it apart to find out if they were telling the truth at this point in time but I hope Obi taught the owner that lesson already. Don't know :shrug

I hope you never have to call Bilstein. Those guys are giant douchebags. Definitely never buying a darn thing from them ever again.

[eacmen]

That stinks. Fail on track or just street driving? What were the signs? How many miles? Asking since I have them as well.

I bought the car with the arms on it so don’t know much of the history. The car was and still is a dedicated track car.

I started to notice the clunk at VIR when pulling back into the paddock. Clunk would happen only when the rear end is warm. Cold start and it was quiet again.

It got progressively worse over the weekend and at one point I got some straight line instability and pitted in and brought the car home.

[oceansize]

That stinks. Fail on track or just street driving? What were the signs? How many miles? Asking since I have them as well.

[eacmen]

The inner bearing failed on our GC rear camber arms. I have an email out to GC about it but does anyone have a recommendation on a good quality bearing to replace it with?

[r4dr]

Yeah, I've been able to get someone on the phone in the middle of the day with the car on the lift to ask a stupid question, and I wasn't even the original customer for the coilovers. But I think it *can* be hit or miss.

[oceansize]

I go out of my way not to be annoying when trying to contact vendors, so I don't get it. Maybe I need to be more obnoxious 🤔

I'm with ya, I'm the same way. I try to be super nice and I could have just been lucky. The guy I deal with is Forest. Don't know his role in the organization.

[elbert]

I had the opposite experience with GC. I own their street coil overs and their ARCAs with bearing. They have always responded to my emails before and post-purchase. I asked them about the bearing they use in their ARCA and said it would be either Lemforder or Delphi. Unlike Obi I didn't tear it apart to find out if they were telling the truth at this point in time but I hope Obi taught the owner that lesson already. Don't know :shrug

I go out of my way not to be annoying when trying to contact vendors, so I don't get it. Maybe I need to be more obnoxious 🤔

[oceansize]

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.

I had the opposite experience with GC. I own their street coil overs and their ARCAs with bearing. They have always responded to my emails before and post-purchase. I asked them about the bearing they use in their ARCA and said it would be either Lemforder or Delphi. Unlike Obi I didn't tear it apart to find out if they were telling the truth at this point in time but I hope Obi taught the owner that lesson already. Don't know :shrug

[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.

[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.

[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.