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      05-31-2021, 12:57 PM   #1
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Sway bars? Or just springs?

So the other day I was driving my car slightly aggressive and went around a long corner and felt like there was way too much body roll. I wasn't driving recklessly, but the turn was tight enough that it really highlighted the cars suspension weakness - too soft!

I like how the car drives when I am in sport mode I sometimes have an in comfort mode when I just want to chill but most of the time I'm in sport or sport plus.

I am wondering if someone makes sway bars that would improve cornering without affecting the ride or if even perhaps sway bars off ask M5 would fit on our car?

I know there are spring options which probably would also help.

I have modified and lowered almost every other car ive owned and I keep telling myself that this is the one I'm going to leave "mostly " stock... *

So curious if anyone has found a way to upgrade sway bars in addition to springs?

My car as the standard adaptive suspension I do NOT have the dynamic handling package
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      06-01-2021, 03:09 PM   #2
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I think it’s highly likely that f90 m5 anti roll bars will fit - subframes are the same, and the attachment points 3/4 on the diagram are shared parts with the m5.
https://www.realoem.com/bmw/enUS/sho...diagId=31_1265

I won’t try that because i have the 2VW adaptive suspension, but i would otherwise, as i started picking parts from the f90 for my m550i
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      06-03-2021, 05:20 AM   #3
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This is interesting, the M5 competition has a unique sway bar part number for the front and rear axle. The rear links and mounts are the same as the G30 but the front has different link part #'s

I think the rear should go right on and the front with aftermarket adjustable links.

Last edited by Boosted_8; 06-03-2021 at 06:10 AM..
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      06-06-2021, 12:17 PM   #4
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I noticed that Dinan sells a swaybar upgrade for the F90 - I sent them an email to ask them if they've made any attempts to adapt them to the M550.

You would think that they had already thought of it and tried? If I get a response with anything helpful I'll post here.
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      06-07-2021, 03:46 AM   #5
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I believe Frozen Fractals has F90 suspension on his G30. I would hit him up.
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      06-15-2021, 12:51 AM   #6
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I saw from someone else that hardrace have M550i sway bars etc.

https://www.hardracesuspension.com.a...-sway-bar~2453
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      08-17-2021, 06:51 AM   #7
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Quote:
Originally Posted by 23109VC View Post
So the other day I was driving my car slightly aggressive and went around a long corner and felt like there was way too much body roll. I wasn't driving recklessly, but the turn was tight enough that it really highlighted the cars suspension weakness - too soft!

I like how the car drives when I am in sport mode I sometimes have an in comfort mode when I just want to chill but most of the time I'm in sport or sport plus.

I am wondering if someone makes sway bars that would improve cornering without affecting the ride or if even perhaps sway bars off ask M5 would fit on our car?

I know there are spring options which probably would also help.

I have modified and lowered almost every other car ive owned and I keep telling myself that this is the one I'm going to leave "mostly " stock... *

So curious if anyone has found a way to upgrade sway bars in addition to springs?

My car as the standard adaptive suspension I do NOT have the dynamic handling package
Did you ever get a sway bar? I was looking into the X-brace from the M5 but was thinking of doing a sway first to see if that satisfies my curiosities.
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      08-19-2021, 02:19 PM   #8
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Quote:
Originally Posted by beyondm3 View Post
Quote:
Originally Posted by 23109VC View Post
So the other day I was driving my car slightly aggressive and went around a long corner and felt like there was way too much body roll. I wasn't driving recklessly, but the turn was tight enough that it really highlighted the cars suspension weakness - too soft!

I like how the car drives when I am in sport mode I sometimes have an in comfort mode when I just want to chill but most of the time I'm in sport or sport plus.

I am wondering if someone makes sway bars that would improve cornering without affecting the ride or if even perhaps sway bars off ask M5 would fit on our car?

I know there are spring options which probably would also help.

I have modified and lowered almost every other car ive owned and I keep telling myself that this is the one I'm going to leave "mostly " stock... *

So curious if anyone has found a way to upgrade sway bars in addition to springs?

My car as the standard adaptive suspension I do NOT have the dynamic handling package
Did you ever get a sway bar? I was looking into the X-brace from the M5 but was thinking of doing a sway first to see if that satisfies my curiosities.
Not yet
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      10-14-2021, 07:53 PM   #9
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Quote:
Originally Posted by 23109VC View Post
So the other day I was driving my car slightly aggressive and went around a long corner and felt like there was way too much body roll. I wasn't driving recklessly, but the turn was tight enough that it really highlighted the cars suspension weakness - too soft!

I like how the car drives when I am in sport mode I sometimes have an in comfort mode when I just want to chill but most of the time I'm in sport or sport plus.

I am wondering if someone makes sway bars that would improve cornering without affecting the ride or if even perhaps sway bars off ask M5 would fit on our car?

I know there are spring options which probably would also help.

I have modified and lowered almost every other car ive owned and I keep telling myself that this is the one I'm going to leave "mostly " stock... *

So curious if anyone has found a way to upgrade sway bars in addition to springs?

My car as the standard adaptive suspension I do NOT have the dynamic handling package
The best option for you will be the KW Coilover kit (variant 3, assuming you have a 540i). These are the beat fir reducing body roll in corners, trunk squat on acceleration etc.
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      01-04-2023, 02:37 PM   #10
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any news?

Hello,

revitalizing this old thread by asking if there was an update?

Anyone knows if the F90 swaybar fit on the G30 with Xdrive and electronic dampers?

thx!
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      01-05-2023, 03:56 PM   #11
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Yep they do, been running base M5 bars for a while now. I
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      01-06-2023, 02:12 PM   #12
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Thanks!

good news - will start searching for this!

Which cars run the advanced swaybar with electronics inside?
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      01-10-2023, 08:31 PM   #13
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Quote:
Originally Posted by Boosted_8 View Post
Yep they do, been running base M5 bars for a while now. I

Did you notice any significant difference from the stock bars on the M550? I can’t imagine the stock sway bars off of an M5 are that expensive? Might be worth swapping them out if it actually improves cornering without negatively affecting ride comfort.
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      01-15-2023, 03:48 PM   #14
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M5 bars are noticeable at the apex. They are a fair bit thicker.
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      01-17-2023, 09:55 AM   #15
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Do the M5 sway bars directly swap in place of M550 bars?

Just did a quick search on eBay and it looks like you could probably pick up a full set front and rear sway bars off of a 2019 or 20 F 90 anywhere from four to $600

I have to do some more research to figure out if they would actually just directly swap in or does it need to be any additional work done to make them bolt up??

I haven’t gone online trying to price them. I wonder if they’re relatively inexpensive??

I would assume that installation is not that difficult?
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      01-17-2023, 11:59 AM   #16
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Quote:
Originally Posted by 23109VC View Post
Do the M5 sway bars directly swap in place of M550 bars?

Just did a quick search on eBay and it looks like you could probably pick up a full set front and rear sway bars off of a 2019 or 20 F 90 anywhere from four to $600

I have to do some more research to figure out if they would actually just directly swap in or does it need to be any additional work done to make them bolt up??

I haven’t gone online trying to price them. I wonder if they’re relatively inexpensive??

I would assume that installation is not that difficult?
You will need the M5 sway bar bushings as well. Sway bars aren't too difficult to install, but sometimes the sway bar end links can be a booger. Not sure how the M550 ones are (I have the active anti roll bars), but you used to need a thin wrench to hold the threaded part while you took the nut off of the end link.
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      04-30-2023, 06:04 AM   #17
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I have an LCI m550i without the dhp but with adaptive dampers, considering if it's better to look at retrofitting the active roll bars from the dhp pack, or f90 roll bars?

Hard to find much info on it. Thoughts?
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      05-07-2023, 12:37 AM   #18
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Quote:
Originally Posted by rG-tom View Post
I have an LCI m550i without the dhp but with adaptive dampers, considering if it's better to look at retrofitting the active roll bars from the dhp pack, or f90 roll bars?

Hard to find much info on it. Thoughts?
I've gone the F90 route with the standard M5 roll bars. I think it will be a mess to try and retrofit the active roll bars and try to program that into the car (it's just my opinion, I haven't looked much into it).

For under 1000 pounds, you can get second-hand f90 roll bars and get them fitted. It's quite simple and everything fits if you get the bars with the bushings. The car is much flatter and has better handling, but a bit jittery at the back on uneven surfaces. In my opinion, go for the roll bars, it would be simpler.

I have added more info in this thread - https://g30.bimmerpost.com/forums/sh....php?t=1998188
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