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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > Best front sway bar for Bilstein B12 Prokit?



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      04-08-2020, 02:03 PM   #1
iqraceworks
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Question Best front sway bar for Bilstein B12 Prokit?

I recently installed the Bilstein B12 Pro Kit with the B8 shocks and Eibach Sport springs The car handles much better than before, but it still seems to really roll around on the corners......it feels horrible compared to my Mini Cooper with aftermarket sway bars.

What's a good front bar to go with the B12 Prokit that will help reduce the sway around the corners?

Any info would be great! Thanks!

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2007 335i, BMS DCI, BMS Chargepipe w/Tial BOV, ARM Catless Downpipes, silicone inlets, Bilstein B12 Prokit Suspension, Whiteline subframe bushings, Front/Rear M3 control arms, G-Plus FMIC, Stage 2 LPFP, Custom E40 tune by Justin (V8Bait), xHP stage 3 transmission flash, RB Two Turbos....10.90 @ 128mph
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      04-08-2020, 11:14 PM   #2
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Just curious, what brand of aftermarket sway bars does your Mini Cooper have?
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      04-09-2020, 12:01 AM   #3
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Quote:
Originally Posted by iqraceworks View Post
I recently installed the Bilstein B12 Pro Kit with the B8 shocks and Eibach Sport springs The car handles much better than before, but it still seems to really roll around on the corners......it feels horrible compared to my Mini Cooper with aftermarket sway bars.

What's a good front bar to go with the B12 Prokit that will help reduce the sway around the corners?

Any info would be great! Thanks!

The Eibach front & rear swaybar set advertise to be tuned to the Eibach springs, which are in the b12 kit
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      04-09-2020, 02:16 AM   #4
Tambohamilton
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E90/92 M3 sways, front and rear. You want to do both really, even though the rear is a pain!
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      04-09-2020, 05:40 AM   #5
iqraceworks
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Quote:
Originally Posted by cpie168 View Post
Just curious, what brand of aftermarket sway bars does your Mini Cooper have?
Alta
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      04-09-2020, 07:04 AM   #6
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I should eibach front sway, stiffer then M3 sway bars but it does creek a bit under load (over speed bumps etc.)

For the price and ease of install, good complimentary mod
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      04-09-2020, 10:46 AM   #7
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Originally Posted by Silnismo View Post
I should eibach front sway, stiffer then M3 sway bars but it does creek a bit under load (over speed bumps etc.)
Poly bushings or..??

If not, go back and tighten your end links.
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      04-09-2020, 11:19 AM   #8
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Quote:
Originally Posted by Silnismo View Post
I should eibach front sway, stiffer then M3 sway bars but it does creek a bit under load (over speed bumps etc.)

For the price and ease of install, good complimentary mod
Do you have adjustable swaybar links?

It shouldn't creak.
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      04-09-2020, 11:21 AM   #9
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Quote:
Originally Posted by Tambohamilton View Post
E90/92 M3 sways, front and rear. You want to do both really, even though the rear is a pain!
Did you lower the subframe 4" or so?
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      04-09-2020, 11:30 AM   #10
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Quote:
Originally Posted by FCobra94 View Post
Quote:
Originally Posted by Silnismo View Post
I should eibach front sway, stiffer then M3 sway bars but it does creek a bit under load (over speed bumps etc.)
Poly bushings or..??

If not, go back and tighten your end links.
@FCobra94

Yes the sway bar comes with polyurethane bushings, everything nice and tight.

Probably did not grease them enough but only creeks over speed bumps.
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      04-09-2020, 11:33 AM   #11
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Quote:
Originally Posted by mweisdorfer View Post
Quote:
Originally Posted by Silnismo View Post
I should eibach front sway, stiffer then M3 sway bars but it does creek a bit under load (over speed bumps etc.)

For the price and ease of install, good complimentary mod
Do you have adjustable swaybar links?

It shouldn't creak.
@mweisdorfer

Yes I have upgraded swaybar links but they were recently added and they were creeking before.

It's not loud or bothersome at all.
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      04-09-2020, 12:25 PM   #12
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Quote:
Originally Posted by Silnismo View Post
@mweisdorfer

Yes I have upgraded swaybar links but they were recently added and they were creeking before.

It's not loud or bothersome at all.
I'm assuming you lubed up the bushings really good before you installed them? I've had all poly bushings in my mini Cooper for the last 7 years and 80,000 miles....not a single noise out of them.
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      04-09-2020, 12:27 PM   #13
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Quote:
Originally Posted by Silnismo View Post
Quote:
Originally Posted by mweisdorfer View Post
Quote:
Originally Posted by Silnismo View Post
I should eibach front sway, stiffer then M3 sway bars but it does creek a bit under load (over speed bumps etc.)

For the price and ease of install, good complimentary mod
Do you have adjustable swaybar links?

It shouldn't creak.
@mweisdorfer

Yes I have upgraded swaybar links but they were recently added and they were creeking before.

It's not loud or bothersome at all.
So, the swaybar is not under duress just sitting there?
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      04-09-2020, 04:55 PM   #14
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Quote:
Originally Posted by mweisdorfer View Post
Did you lower the subframe 4" or so?
I actually can't remember how far I needed to lower it...it was further than I thought though, I remember that much! I lowered the exhaust, disconnected brake hoses, removed the heat shield below the driveshaft, disconnected the shocks...that was all.
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      04-09-2020, 06:04 PM   #15
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Quote:
Originally Posted by Tambohamilton View Post
Quote:
Originally Posted by mweisdorfer View Post
Did you lower the subframe 4" or so?
I actually can't remember how far I needed to lower it...it was further than I thought though, I remember that much! I lowered the exhaust, disconnected brake hoses, removed the heat shield below the driveshaft, disconnected the shocks...that was all.
Wow
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      04-10-2020, 01:19 AM   #16
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I don't think you could do it without disconnecting all that...but I might be wrong. I did it at the same time as doing subframe bushings, so all that was done anyhow.
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      04-10-2020, 11:53 AM   #17
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Quote:
Originally Posted by Tambohamilton View Post
I don't think you could do it without disconnecting all that...but I might be wrong. I did it at the same time as doing subframe bushings, so all that was done anyhow.
I attempted the rear swaybar with just lowering the subframe and keeping the exhaust/brake hoses attached. It was a real b*tch. I decided it wasn't worth my time and I didn't want an oversteer tendency while it was still a dual driver car.

I was easily able to install the Whiteline subframe bushing doing just the above. However, if you wanted to pull/remove the bushing unhooking the rest of the stuff is the smart way to go.

When the car is solely my machine likely I'll drop the whole she-bang and install the swaybar.

I'd like to hear from those that were able to get it in without disconnecting the brakes, etc.
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      04-11-2020, 09:41 PM   #18
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Quote:
Originally Posted by tlow98 View Post
Quote:
Originally Posted by Tambohamilton View Post
I don't think you could do it without disconnecting all that...but I might be wrong. I did it at the same time as doing subframe bushings, so all that was done anyhow.
I attempted the rear swaybar with just lowering the subframe and keeping the exhaust/brake hoses attached. It was a real b*tch. I decided it wasn't worth my time and I didn't want an oversteer tendency while it was still a dual driver car.

I was easily able to install the Whiteline subframe bushing doing just the above. However, if you wanted to pull/remove the bushing unhooking the rest of the stuff is the smart way to go.

When the car is solely my machine likely I'll drop the whole she-bang and install the swaybar.

I'd like to hear from those that were able to get it in without disconnecting the brakes, etc.
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      04-12-2020, 10:35 AM   #19
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man that’s a lot of work doing the rear sway bar compared to the front. Is all that extra work really worth it? Is doing only the front such a bad idea? Wouldn’t that offer some benifits or does doing only the front sway bars upgrade cause some negative effects too?
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      04-12-2020, 11:07 AM   #20
iqraceworks
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I'm in the same boat......just dropped my rear subframe a few weeks ago to install new bushings.... Should have done a rear sway bar then. Not sure I want to drop it again. But...from everything I read, doing a front bar without a rear makes handling worse. At this point...I think I'm just going to leave the stock bars.
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      04-12-2020, 11:17 AM   #21
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So aftermarket front swaybars on a e90 will just make the car more stable? How about oversteer and understeer charecteristics?
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      04-12-2020, 11:33 AM   #22
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More stable? What do you mean, exactly?

It will make the car quicker to react to steering inputs, initially, but then more prone to understeer as lateral load increases.
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