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-   -   Adaptive Drive suspension replacement questions (https://xoutpost.com/bmw-sav-forums/x5-e70-forum/110677-adaptive-drive-suspension-replacement-questions.html)

harvinstl 08-15-2019 01:10 PM

Adaptive Drive suspension replacement questions
 
Hi all, I've just crossed 122k on the original suspension and it seems to be time for a refresh on the front suspension. Only problem seems to be able to find the right springs/shocks because I'm a bit confused with all of the options available.

Do I have to replace with OEM adaptive drive shocks? If not, what would some options be? If so, where would/could be the cheaper price options be?

https://www.mdecoder.com/decode/l310495

Thanks in advance for any help!

n64456 08-15-2019 07:14 PM

I just went thru this last month; '07 3.0si with Adaptive drive(Electronic Dampening Control). "EDC malfunction" message started coming on intermittently at about 115-120K miles; then on all the time. Car drove like the struts were completely shot, since each shock's fluid valves default to the "open" position. Front AD struts are about $800ea, and rear about $500ea just for the shocks (thru "yourBMWparts.com"). No rears anywhere in the CONUS, and about a 2 month wait to get them from Germany... So, about $2800 wholesale just for parts. Then add $400 for an AD wheel alignment...

I'm getting ready to sell the vehicle; so, no way I was dropping $3300 on shock swap for a $6000 car... Especially after dropping $2500 earlier this year on other maintenance; (H2O pump, AC compressor, front crank seal, DISA valves, fluid leaks, etc)...

I ordered non AD Bilsteins for all 4 corners, new bumpers and cushions, and had to replace front springs since one had broken in the strut. Replaced them all without any issues. Will always get the "EDC Malf" on startup, but the car rides and handles much better. I don't believe it can be coded out, but frankly IDC...

As a note: the front and rear AD sway bars will not work as designed, since the AD system completely disables itself if any part is inoperative. The E60 series has standard struts with AD swaybars, and works fine, but the E70 is all tied together (according to the local BMW stealer).

Bilsteins: $670
Cushions, bumpers, and hardware: $130
Used springs: $125/pr
Total: less than $1000

If you plan on keeping the car long term, and go the standard shock route; you may want to consider replacing the AD swaybars (and mounts) with standard ones from a wrecked E70. It will also require plugging the hydraulic lines from the PS pump that supply fluid to the AD sway bars...

Good luck whichever path you take.

ard 08-15-2019 10:00 PM

Quote:

Originally Posted by harvinstl (Post 1167371)
Hi all, I've just crossed 122k on the original suspension and it seems to be time for a refresh on the front suspension. Only problem seems to be able to find the right springs/shocks because I'm a bit confused with all of the options available.

Do I have to replace with OEM adaptive drive shocks? If not, what would some options be? If so, where would/could be the cheaper price options be?

https://www.mdecoder.com/decode/l310495

Thanks in advance for any help!

AD was a $4000 option that was much sought after by those in the know. (Clearly not in the 2nd, 3rd...5th- hand marketplace.)

Say to read someone will pick up a used car and have to report "yeah the prior owner hacked that all out"....


There are no aftermarket or OEM replacements that I know of. Only option is OE BMW parts. (or used)


When I face this, I will try and find someone to rebuild mine. Probably need to ship them to a company that works on race cars, a real shock specialist.




Finally, I recall back in the day the early 1990-92 Q45s with the adaptive suspension...people would hack them up, then finally the car would arrive to a true nut who would restore them. Sigh.

Baby Unicorn Taco 08-18-2019 11:40 AM

Ard, I would think you might enjoy a rebuild project like that and could handle it. Iím not looking forward to the same dilemma. Iím at 160,000 and counting. Whatís the failure rate on the AD struts? Have these struts been stressed less than non AD struts due to their design?


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TriX5 08-19-2019 04:29 AM

n64456: How is the alignment with AD different from non-AD......?

ard 08-19-2019 11:57 AM

Quote:

Originally Posted by TriX5 (Post 1167516)
n64456: How is the alignment with AD different from non-AD......?

Lol

It isn't. Unless you are talking to a shyster dealer/shop looking for excuses to $crew you.

Then there is the whole 'I wanna get rid of it, so not really gonna be honest nor push for anything thaty doesn't support what I want'

:cool:

Baby Unicorn Taco 08-19-2019 12:30 PM

Itís funny. I have a shop near me in Charleston (supposedly reputable) that charges extra for vehicles with adaptive drive. Needless to say I did not use them. I think the price was $130 without adaptive and $170 with.


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ard 08-19-2019 03:06 PM

A friend owns a tire store. BMWs have all sorts of 'special pricing'.

n64456 08-19-2019 03:17 PM

Quote:

Originally Posted by ard (Post 1167536)
Lol

It isn't. Unless you are talking to a shyster dealer/shop looking for excuses to $crew you.

Then there is the whole 'I wanna get rid of it, so not really gonna be honest nor push for anything thaty doesn't support what I want'

:cool:

When I asked the tech at the local BMW indy shop I use, he said there are different specs for AD cars because of the system's hydraulics that control the sway bars and electronic damping. AD alignment was $200; regular was $125.

I also asked him if the alignment values were different for AD vs. non-AD; and he said yes.

I can give you the shop's name and number; and you can throw your snark and condescension directly at them, if you'd like...

ard 08-22-2019 11:02 AM

Quote:

Originally Posted by n64456 (Post 1167549)
When I asked the tech at the local BMW indy shop I use, he said there are different specs for AD cars because of the system's hydraulics that control the sway bars and electronic damping. AD alignment was $200; regular was $125.

I also asked him if the alignment values were different for AD vs. non-AD; and he said yes.

I can give you the shop's name and number; and you can throw your snark and condescension directly at them, if you'd like...

Go to www.newtis.info and look up the alignment specs.

That shop lied to you one on one...posting to the public as if it were a fact was your call. Happens. In the M world it is common for service salesmen to wind up owners about how 'special' their cars are, as a way to extract $$$.

Just beware. I wouldn't trust the guys you spoke with...


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