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      05-29-2021, 11:57 PM   #1
Mattx98
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M Adaptive Suspension to Bilstein B8's

I have a 2013 335i xDrive with 70k miles on it and the M Adaptive Suspension with H&R Sport Springs. The suspension is definitely shot and the ride quality is awful with the H&R and stock suspension.

I pulled the trigger on Bilstein B8's and am looking to replace the strut mounts as well. On FCP Euro I have noticed the strut mounts are listed as with adaptive or without adaptive. If I am switching to Bilstein does it really matter which strut mount I go with?
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      05-30-2021, 03:20 PM   #2
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Did you order Bilstein B8 Damptronic or regular B8 shocks?
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      05-30-2021, 04:53 PM   #3
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For the F30 Bilstein only seems to make the B6 in Damptronic. I decided to go with the B8’s because they are made for lowering springs. I plan to do an EDC delete with ProTools.
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      05-30-2021, 05:14 PM   #4
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Quote:
Originally Posted by Mattx98 View Post
For the F30 Bilstein only seems to make the B6 in Damptronic. I decided to go with the B8’s because they are made for lowering springs. I plan to do an EDC delete with ProTools.
Got it.

Worth noting: B8 is a stiff shock. Combined with a shorter compression / rebound cycle, some find it too stiff for daily driving.
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      05-30-2021, 06:15 PM   #5
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Appreciate the information. Is there any other options besides Koni Yellows?
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      05-30-2021, 07:02 PM   #6
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I had B8 with ACS springs and it was a great, firm set up for me. If you end up off road or hit a large road imperfection it can be jarring but thats obviously not your intention and wont be happening often. Im betting that you will be very happy with your decision.

Took my RWD all over the joint with this setup including regular weekend ski trips and hiking, etc. Spent plenty of time on rough surfaces, never had any issues and still have all my fillings.

Smooth highway is confidence inspiring to say the least.
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      05-30-2021, 07:38 PM   #7
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I’m glad to hear you had a positive experience overall. Currently the ride quality is pretty awful it’s extremely bouncy and feels floaty. I know the struts and shocks are definitely shot. I’m looking forward to driving this car without hitting a small dip on the highway and feel like it’s floating in whatever direction it feels like it.

I also rarely drive the car in comfort mode so I didn’t see the point in retaining EDC.
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      05-30-2021, 09:36 PM   #8
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Quote:
Originally Posted by Mattx98 View Post
I’m glad to hear you had a positive experience overall. Currently the ride quality is pretty awful it’s extremely bouncy and feels floaty. I know the struts and shocks are definitely shot. I’m looking forward to driving this car without hitting a small dip on the highway and feel like it’s floating in whatever direction it feels like it.

I also rarely drive the car in comfort mode so I didn’t see the point in retaining EDC.
If EDC functionality is no longer important, Koni Special Active shocks and Eibach Pro springs are a good combination with many positive reviews in this forum.
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      06-01-2021, 02:03 PM   #9
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Quote:
Originally Posted by cfm56d7b View Post
Quote:
Originally Posted by Mattx98 View Post
For the F30 Bilstein only seems to make the B6 in Damptronic. I decided to go with the B8's because they are made for lowering springs. I plan to do an EDC delete with ProTools.
Got it.

Worth noting: B8 is a stiff shock. Combined with a shorter compression / rebound cycle, some find it too stiff for daily driving.
Heard same here. Being in Texas roads aren't nearly as bad as east coast however my part of town does have some bad dips/pot holes and disrepair

To be stiff would kill me with my 20's but do you think if I avoid the general bad areas it would still be worth to do?

To rank my reasons for getting the b14's is 1. Better ride quality since xdrive is so floaty and 2. Lower just slightly to also get rid of xdrive gap

Other than that I don't want to do just lowering springs and do the b6's offer drop as well?
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      06-01-2021, 03:41 PM   #10
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My car is also due for a suspension refresh, and I was planning on doing an EDC Delete with Bilstein B8 with Eibach Pro springs. However, I heard that EDC shocks/struts have accelerometer mounts that the passive ones don't, and that these cant be done without. Please keep us posted with how thing went. Cheers.
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      06-01-2021, 04:53 PM   #11
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Quote:
Originally Posted by djacinto View Post
Heard same here. Being in Texas roads aren't nearly as bad as east coast however my part of town does have some bad dips/pot holes and disrepair

To be stiff would kill me with my 20's but do you think if I avoid the general bad areas it would still be worth to do?

To rank my reasons for getting the b14's is 1. Better ride quality since xdrive is so floaty and 2. Lower just slightly to also get rid of xdrive gap

Other than that I don't want to do just lowering springs and do the b6's offer drop as well?
20" wheels and shocks with shorter compression / rebound cycles - like B8 - plus lowering springs ... so many factors in the mix which could lead to less than satisfactory results.

I've had excellent experience with KW Street Comfort coilovers installed on 2013 BMW 335i xDrive sedan. The car was lowered slightly to eliminate the gap but nowhere near where parking lot ramps caused the front lip to be scraped.

The ideal solution for 20" wheels would be coilovers which allow height to be set at near OEM level, xDrive compatible, and with independent rebound and compression controls.

I don't think such coilovers exist for BMW F3x vehicles. KW V3 coilovers offer independent rebound and compression controls but lower the vehicle too much for my preferences.

Ohlins R&T coilovers can be set at near OEM height, aren't xDrive compatible, costly - with excellent feedback from users.

There isn't a perfect answer ...
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      06-01-2021, 06:54 PM   #12
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Quote:
Originally Posted by cfm56d7b View Post
Quote:
Originally Posted by djacinto View Post
Heard same here. Being in Texas roads aren't nearly as bad as east coast however my part of town does have some bad dips/pot holes and disrepair

To be stiff would kill me with my 20's but do you think if I avoid the general bad areas it would still be worth to do?

To rank my reasons for getting the b14's is 1. Better ride quality since xdrive is so floaty and 2. Lower just slightly to also get rid of xdrive gap

Other than that I don't want to do just lowering springs and do the b6's offer drop as well?
20" wheels and shocks with shorter compression / rebound cycles - like B8 - plus lowering springs ... so many factors in the mix which could lead to less than satisfactory results.

I've had excellent experience with KW Street Comfort coilovers installed on 2013 BMW 335i xDrive sedan. The car was lowered slightly to eliminate the gap but nowhere near where parking lot ramps caused the front lip to be scraped.

The ideal solution for 20" wheels would be coilovers which allow height to be set at near OEM level, xDrive compatible, and with independent rebound and compression controls.

I don't think such coilovers exist for BMW F3x vehicles. KW V3 coilovers offer independent rebound and compression controls but lower the vehicle too much for my preferences.

Ohlins R&T coilovers can be set at near OEM height, aren't xDrive compatible, costly - with excellent feedback from users.

There isn't a perfect answer ...
I don't want the same ride height I'm definitely wanting a drop, and I think the b14's are the answer, I just didn't know if they'd be too rough for daily

However, to be honest I enjoy the ride on my 20's non rft much more than I did on my 17 cinturato rft's much more, even my girlfriend agrees
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      06-01-2021, 07:16 PM   #13
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Quote:
Originally Posted by djacinto View Post
I don't want the same ride height I'm definitely wanting a drop, and I think the b14's are the answer, I just didn't know if they'd be too rough for daily

However, to be honest I enjoy the ride on my 20's non rft much more than I did on my 17 cinturato rft's much more, even my girlfriend agrees
Understood. The remaining question is whether you want to adjust the ride height after initial installation and by how much.
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      02-14-2022, 02:35 PM   #14
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Quote:
Originally Posted by Mattx98 View Post
I’m glad to hear you had a positive experience overall. Currently the ride quality is pretty awful it’s extremely bouncy and feels floaty. I know the struts and shocks are definitely shot. I’m looking forward to driving this car without hitting a small dip on the highway and feel like it’s floating in whatever direction it feels like it.

I also rarely drive the car in comfort mode so I didn’t see the point in retaining EDC.
Reviving this as I don’t think the original question was answered. When switching from edc shocks/struts to non edc which top hats do we use? Mounts for adaptive or is it possible to use mounts that are for non adaptive?
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      02-14-2022, 08:35 PM   #15
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Quote:
Originally Posted by Marq_z View Post
Reviving this as I don’t think the original question was answered. When switching from edc shocks/struts to non edc which top hats do we use? Mounts for adaptive or is it possible to use mounts that are for non adaptive?
The top hat is the same whether you have EDC or not.
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      02-15-2022, 08:39 AM   #16
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For my LCI RWD 12/ 2015model the top mounts have different part numbers for EDC /non-EDC cars.I don't know if there is any critical difference but the part numbers are different.
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      02-15-2022, 09:08 PM   #17
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Quote:
Originally Posted by gds View Post
For my LCI RWD 12/ 2015model the top mounts have different part numbers for EDC /non-EDC cars.I don't know if there is any critical difference but the part numbers are different.
My rwd 2012 has different part numbers also, but the edc top hat was discontinued. It’s just confusing that they’re sold as “w/o edc suspension” or “for cars w/ edc suspension”. I emailed FCP and they said that they don’t differ so I ordered some Meyle ones for my new b14 setup. FaRKle! Thanks for the help!
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