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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > Suspension | Chassis | Brakes > Installed: ACS springs with Bilstein B6's on F30 xDrive
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      06-07-2018, 09:19 AM   #89
Marlinman
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sorry about that

OP listed 24-264570

All I can find on summit is 24-217859

for the rear shock

Also with ACS there is a different part number for xdrive apparently....
Here is what they sent me:
3130230310 is for 335i. For the 335i xDrive, the spring kit is 3130231330
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      06-07-2018, 09:58 AM   #90
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Quote:
Originally Posted by Marlinman View Post
sorry about that

OP listed 24-264570

All I can find on summit is 24-217859

for the rear shock

Also with ACS there is a different part number for xdrive apparently....
Here is what they sent me:
3130230310 is for 335i. For the 335i xDrive, the spring kit is 3130231330
I believe you have the part numbers flipped, but I understand now.

This is a topic that I tried running down for about a week or so and gave up when sales tech kept providing different answers. I too, noticed that xDrive has different part numbers for springs, but couldn't get a straightforward decision on the fit and amount of lowering involved.

My original ASSumption was that the OP used these springs specifically because they lowered the car the least amount, but that's yet to be confirmed.

These springs are deemed appropriate per model description of my 328D xDrive: https://www.ac-schnitzer.de/en/bmw/3...es-gt-f34.html

And these are the springs the OP used: https://www.ac-schnitzer.de/en/bmw/3...-f32-coup.html


Now as for the Bilstein part numbers, it appears there are differing part numbers among each year on these. I really can't add much color to that....

Last edited by mpm01; 06-07-2018 at 09:59 AM.. Reason: grammar
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      06-12-2018, 07:57 AM   #91
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thanks for the input!
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      07-20-2018, 10:33 AM   #92
Marlinman
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anyone blowing up their axles with this set up? There is a guy posting that he keeps busting the axle on his f30 335 xdrive which is lowered....what are you guys experiencing? The cause of his issue is not fully determined yet but who knows.
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      07-20-2018, 02:14 PM   #93
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Quote:
Originally Posted by Marlinman View Post
anyone blowing up their axles with this set up? There is a guy posting that he keeps busting the axle on his f30 335 xdrive which is lowered....what are you guys experiencing? The cause of his issue is not fully determined yet but who knows.
No issue here.
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      07-24-2018, 03:42 PM   #94
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Quote:
Originally Posted by MickAv8r View Post
If you are lowering the car via springs you want to use the Bilstein B8, not the B6. The B6 is for stock ride heights the B8 is for cars with lowering springs.
Yep...
That’s exactly what i was recommended today for H&R springs 👍🏽
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      01-02-2019, 08:59 PM   #95
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I’m gonna run acs springs with koni sports with adjustability.
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      11-21-2021, 08:57 AM   #96
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Quote:
Originally Posted by mtenhoven View Post
Part numbers are as follows...
ACS springs: 3130230310
Bilstein B6: 35-207481, 35-207207, 24-217859 (x2)
No additional parts needed.

As I mentioned, ride is definitely firmed up, not jarring. I recall reading the B4 dampers are 15% stiffer than stock. Regarding the stock dampers, I could compress them by hand, not using the ground; rebound was slow. The B6s I could not compress by hand, for what that's worth.

I'll post additional photos later this week.
I was search to see if there was something wrong with the B6s I ordered for an F25 X3 because I was not able to compress them by hand. It seems that is normal for B6s.
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