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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > Serious Anti-Sway Bar Talk



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      05-14-2013, 08:06 PM   #89
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Originally Posted by 335iSSA
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Originally Posted by sle39lvr View Post
If it oversteers dangerously, I WILL get M3 Front.
I would be very careful only doing the rear bar. I had the BMW performance suspension (ver 2) on my E92 and did the M3 rear sway along with my M3 rear subframe bushings and Quaife LSD. With the DSC/TC on there was no problem but when doing AutoX with the nannies off the car would oversteer VERY easily. You would think about turning and it would oversteer. I took it off for the stock pencil thin bar the next day and the handling was more predictable and the car was balanced almost perfectly.

I assumed that with the stiffer front bar that came with the PS that it would be okay...I was wrong and it was an expensive experiment for me.

So with your stock suspension and no LSD, I would recommend against it. So proceed with caution or get the M3 front bar and install in along with the rear.
May I ask how much your rear toe in & camber?
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      05-14-2013, 08:32 PM   #90
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May I ask how much your rear toe in & camber?
They were set at the 335 specs.
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      05-15-2013, 01:01 AM   #91
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May I ask how much your rear toe in & camber?
They were set at the 335 specs.
Did you try to set to -2 camber and 0.2 or 0.3 toe in at rear? It may help with this issue.
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      05-15-2013, 07:28 PM   #92
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Did you try to set to -2 camber and 0.2 or 0.3 toe in at rear? It may help with this issue.
I no longer have the car so it's moot.
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      05-16-2013, 01:32 AM   #93
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Originally Posted by 335iSSA View Post
I would be very careful only doing the rear bar. I had the BMW performance suspension (ver 2) on my E92 and did the M3 rear sway along with my M3 rear subframe bushings and Quaife LSD. With the DSC/TC on there was no problem but when doing AutoX with the nannies off the car would oversteer VERY easily. You would think about turning and it would oversteer. I took it off for the stock pencil thin bar the next day and the handling was more predictable and the car was balanced almost perfectly.

I assumed that with the stiffer front bar that came with the PS that it would be okay...I was wrong and it was an expensive experiment for me.

So with your stock suspension and no LSD, I would recommend against it. So proceed with caution or get the M3 front bar and install in along with the rear.
I just put on the rear sway. Remember, I am still on stock shocks and springs..non sport..Understeer is gone a lot, but the front end feels really soft due to it's stock sway bar. Along with M3 subframe bushings, the rear feels really nice now without the floaty feel I used to get. I think the soft front will be cured once I get a decent set of coil overs. I just have to test it out in the rain now..
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      05-21-2013, 11:52 AM   #94
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After few days, I found rubbing marks on the rear sway (M3 sway) on the driver's side. I wonder if I am the only one or may be because I still have non-sport stock suspension
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      05-21-2013, 02:46 PM   #95
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After few days, I found rubbing marks on the rear sway (M3 sway) on the driver's side. I wonder if I am the only one or may be because I still have non-sport stock suspension
Are you sure the bar isn't installed backwards?
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      05-21-2013, 05:18 PM   #96
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Are you sure the bar isn't installed backwards?
Nah, I just checked. I think it's from softer suspension. New shocks and springs should cure it..
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