[Ilikemike]

I tried getting an anti Roll bar from Schmiedmann but FedEx lost the part and the customer service at Schmiedmann was miserable (long story for another posting) so I’m looking for a North American supplier and would appreciate any advice.

[medphysdave]

There is the CSR option and then there is the non BMW version direct from the folks that make the CSR version. Bmwdiyguy references the other bar in this video.

[medphysdave]

Curious why you feel you need an upgrade. I ask because I'm considering this. Seems like if you want more oversteer than you currently have then stiffening the front bar would be a good upgrade. On track I don't think the car oversteers much. If anything I need to use the throttle. I can dive into a corner pretty aggressively and not worry about the rear snapping around. I'm on stock suspension, so your setup might be different.

[FaRKle!]

Originally Posted by Ilikemike

I tried getting an anti Roll bar from Schmiedmann but FedEx lost the part and the customer service at Schmiedmann was miserable (long story for another posting) so I’m looking for a North American supplier and would appreciate any advice.

You should be able to order the CSR bar from BMW dealers online (search PN 31-35-8-431-269 for the bar and PN 31-35-8-431-270 for the bushings). It was cheaper than getting the H&R branded version. Some dealers might have you enter a VIN, but you can google a M2 CSR VIN and enter that .

Here's my video on the bar:

Originally Posted by Index

0:00 Intro
0:14 Stock vs M2 CS Racing Sway Bars
3:17 Prepping to Get Under the Car
3:59 Removing Underbody Panels
6:54 Disconnecting End Links
7:40 Removing Front Sway Bar
8:06 Removing Sway Bar Brackets/Bushings
9:57 Installing Sway bar Bushings/Brackets
11:52 Installing Front Sway Bar
12:43 Connecting End Links
13:48 Installing Underbody Panels
16:32 Closing Commentary

[medphysdave]

Originally Posted by FaRKle!

You should be able to order the CSR bar from BMW dealers online (search PN 31-35-8-431-269 for the bar and PN 31-35-8-431-270 for the bushings). It was cheaper than getting the H&R branded version. Some dealers might have you enter a VIN, but you can google a M2 CSR VIN and enter that .

Here's my video on the bar:

Noticeable benefit day to day or on track? Curious about the cars handling characteristics changed? Did you do the rear bar?

[Ilikemike]

Originally Posted by medphysdave

Curious why you feel you need an upgrade. I ask because I'm considering this. Seems like if you want more oversteer than you currently have then stiffening the front bar would be a good upgrade. On track I don't think the car oversteers much. If anything I need to use the throttle. I can dive into a corner pretty aggressively and not worry about the rear snapping around. I'm on stock suspension, so your setup might be different.

I’ve been in a CS with this modification and it feels much more planted and controllable. I don’t track so I don’t really know if it’s placebo effect or objectively better but a friend who does track his with the bar reports better times and improved handling dynamics….

[medphysdave]

Originally Posted by Ilikemike

I’ve been in a CS with this modification and it feels much more planted and controllable. I don’t track so I don’t really know if it’s placebo effect or objectively better but a friend who does track his with the bar reports better times and improved handling dynamics….

Is the friend running stock suspension? I might do this when I'm messing with camber plates.

[Ilikemike]

Originally Posted by medphysdave

Is the friend running stock suspension? I might do this when I'm messing with camber plates.

Yes, at the moment. He just ordered camber plates and new suspension components, springs, shocks, etc.… I’ll ask him to send you a text or email

[Track/S]

Originally Posted by FaRKle!

You should be able to order the CSR bar from BMW dealers online (search PN 31-35-8-431-269 for the bar and PN 31-35-8-431-270 for the bushings). It was cheaper than getting the H&R branded version. Some dealers might have you enter a VIN, but you can google a M2 CSR VIN and enter that .

I don't think the csr stabilizers are from H&R brand, basically because the csr's rear bar has a different geometry compared to the H&R.

[bdogk]

Originally Posted by Ilikemike

Yes, at the moment. He just ordered camber plates and new suspension components, springs, shocks, etc.… I’ll ask him to send you a text or email

I've had the CSR bar in place for about 18 months now and most happy with it. At autoX/track, turn-in's faster and limits lean to only a few degrees. Front end definitely feels more planted, but on fast long radius turns, I can feel the outside rear squat a little - not drastic. Would be nice to also have the rear CSR sway bar, but I don't want to go through the effort/expense of dropping the rear subframe.

I've since installed Vorshlag camber plates, running a moderate -2.5 degs. Next going on is replacing the OEM EDC shocks/struts with Bilstein B6 EDC units. I will run stock springs to retain the ride height. Not worth clipping the CF spoiler.

[FaRKle!]

Originally Posted by medphysdave

Noticeable benefit day to day or on track? Curious about the cars handling characteristics changed? Did you do the rear bar?

It's noticeable on the street, but you're not really going to benefit from it there. On the track it does a good job of keeping the front from rolling over as much and staying flatter on turn down to the apex. I didn't do the rear bar because I don't feel like the rear needs it as much. If going to an aftermarket suspension (like the Ohlins R&T), then definitely the rear bar would be more beneficial (CSR bar plus that suspension understeers horribly).

Originally Posted by Track/S

I don't think the csr stabilizers are from H&R brand, basically because the csr's rear bar has a different geometry compared to the H&R.

Some of the CSR bars (front and rear) have H&R logos on them .
Here's a pic of the rear bar (PN 33558431272):

[medphysdave]

Curious if it would afford running slightly less camber on track due to less "roll over", and therefore a more street friendly camber number could work. Will try to figure out how much camber I can run on the street and still get good life out of the tires.

[Track/S]

Originally Posted by FaRKle!

Some of the CSR bars (front and rear) have H&R logos on them .
Here's a pic of the rear bar (PN 33558431272):

It seems h&r have manufactured a specific model for csr, the h&r for f87 are different.

[FaRKle!]

Originally Posted by medphysdave

Curious if it would afford running slightly less camber on track due to less "roll over", and therefore a more street friendly camber number could work. Will try to figure out how much camber I can run on the street and still get good life out of the tires.

I was running about -2.9deg with the CSR bar on stock springs/dampers. I didn't feel like I needed more.

[medphysdave]

Originally Posted by FaRKle!

I was running about -2.9deg with the CSR bar on stock springs/dampers. I didn't feel like I needed more.

How would you rate your tire wear?

[TargaM2]

The CSR bars are in fact made by H&R.
The H&R bars are 30mmF/25mmR solid bars with 2 hole adjustability.
I have the Whiteline version which are similarly 30mmF/26mmR solid bars although they have 3 hole adjustability. I’m currently on H&R supersport springs & Bilstein B6 dampers plus a couple of other trick bits & pieces.
With 2.2 F neg camber, wear on my road tires is pretty good & the contact patch/grip on my track semis is also ok.
I have a dedicated track car for serious competition use thus the M2 is setup to be more road friendly.
It’s all a balancing act depending on your intended usage & obviously no single combination suits everyone.

[Track/S]

Originally Posted by TargaM2

The H&R bars are 30mmF/25mmR solid bars with 2 hole adjustability.

On front 2holes, on rear 1 & and other geometry...

[Ilikemike]

Thanks guys, all the info has been very helpful, I ended up getting an H&R antisway bar from a Canadian company, partsengine.ca, of course, they’re getting it out of the US but the pricing was really good…$658.00 Canadian including shipping and taxes.,

[FaRKle!]

Originally Posted by medphysdave

How would you rate your tire wear?

I have yet to wear through those tires (RS4). Wear was good with that setup and I wasn't looking to change it if I stayed with it.

[ashmostro]

IMHO, bars are the last thing to change on suspension, and should be used for running front to rear balance. If you are experiencing too much roll or want more responsiveness, springs or could will be more useful.

Now, the counter argument is bars are much cheaper and more easily reversible mod, which is totally valid. It's a personal choice.

[GtSport]

Guys, I need some advise about ARBs.
I don’t want to use just the front because of the understeer that it might induce, so I was about to order the H&R set. I have a new set of true coilover rear suspension on the way though and I’ve just heard that H&R rear sway bar touches the spring on compression when you have rear coilovers.
Anyone here running true coilover rear with ARBs? Maybe can tell me which manufacturer.

[chrisjguzman]

Originally Posted by GtSport

Guys, I need some advise about ARBs.
I don’t want to use just the front because of the understeer that it might induce, so I was about to order the H&R set. I have a new set of true coilover rear suspension on the way though and I’ve just heard that H&R rear sway bar touches the spring on compression when you have rear coilovers.
Anyone here running true coilover rear with ARBs? Maybe can tell me which manufacturer.

This is what you need https://www.bimmerworld.com/BimmerWo...-M2-M3-M4.html