[Prowess Symphony]

xi/xDrive Suspension Compatibility List

- M3 Rear Sway Bar
- M3 Rear Bushings (2 of 33312283382 and 2 of 33312283383)
- M3 Rear Guide Rods
- M3 Rear Upper Links
- M3 Rear Lower Camber Kit
- M3 Front Strut Brace

- BMW Performance Front Strut Brace (with aftermarket intake)
- BMW Performance Springs
- BMW "i" Sport Springs

- Cross Front Strut Bar

- UUC Front And Rear Sway Bars (xi version)

- Hotchkis Rear Chassis Brace

- KW Coilovers Variant 1 & 3 (xi version) (v1 10220048 coupe/sedan, 10220049 wagon)

- AST 4100 Coilovers (custom order through HP Autowerks)

- H&R Rear Sway Bar
- H&R Bushings
- H&R Sport Springs (i and xi)
- H&R Race Springs
- H&R Coilovers (xi version)

- Eibach Pro Springs

- Bilstein B8 Struts/Shocks (xi version)

- Stainless Steel Brake Lines (xi version)

- Any e9x Rotors


Notes:
* Staggered setups work
* The rear of the "xi" is the same as the "i"
* The M3 front/rear bushings are not compatible with UUC front/rear sway bars
* All e9x compatible spare tires work
* I take no responsibility if any information is inaccurate

[PKumarM3]

is there a difference in kw3 application for the e90 and e92?

[Prowess Symphony]

Originally Posted by PKumarM3

is there a difference in kw3 application for the e90 and e92?

KW3 are the same for e90 and e92.

[Prowess Symphony]

So, this is the xi suspension upgrade path. Thoughts?

Stage 1:

-H&R or KW Coilovers

or

-Eibach or H&R springs with Konis in the rear. (this is what dinan does, front struts remain the same)


Stage 2:

Front and rear sways bars, rear chassis brace, front strut brace, m3 parts. (not sure which are most valuable, useless, etc)

[bolty]

Originally Posted by Prowess Symphony

-OEM BMW "i" Sport Springs

If this is truly the case, then the BMW performance springs would make this list as well. I believe they'd give you a lower drop than the ZSP springs.

[J.P.]

I believe the performance springs are also made by eibach.
I would just go with Eibach springs for now, and then purchase adjustable shocks when they are released.

[Prowess Symphony]

The xi apparently has a 15mm rear sway unlike the i which has a 13mm. I was wondering if I should not get a UUC or M3 rear sway now since the install is long and hard.

For my list of stage 2 (Front and rear sways bars, rear chassis brace, front strut brace, m3 parts) is there anything that should NOT be added. Since there is a limited number of xi parts, there has to be a perfect list of what to add or not add.

[PKumarM3]

would this set up work ?

http://www.tirerack.com/suspension/s...140&perfCode=S

[Prowess Symphony]

Originally Posted by PKumarM3

would this set up work ?

http://www.tirerack.com/suspension/s...140&perfCode=S

Yup, its fine.

[SGxi]

-M3 Rear Sway Bar
-M3 Rear Subframe Bushings
-M3 Front Strut Brace
-M3 Rear Guide Rod
-M3 Upper Link Kits

They all fit the E92 xi from the E92 M3?? what about for the E90s?

[J.P.]

Originally Posted by SGxi

-M3 Rear Sway Bar
-M3 Rear Subframe Bushings
-M3 Front Strut Brace
-M3 Rear Guide Rod
-M3 Upper Link Kits

They all fit the E92 xi from the E92 M3?? what about for the E90s?

yes, would I recommend it?
not really

[Prowess Symphony]

Originally Posted by JP_335xi

yes, would I recommend it?
not really

Really? Some of that stuff isnt so expensive. A bunch of m3 stuff with springs is way less then coilovers. Whats the negatives to adding the m3 stuff?

[J.P.]

Originally Posted by Prowess Symphony

Really? Some of that stuff isnt so expensive. A bunch of m3 stuff with springs is way less then coilovers. Whats the negatives to adding the m3 stuff?

cause the m3 rear suspension is engineered for a lighter weight rear wheel drive car.

[Prowess Symphony]

I thought I would bump this in case their is any new info to add.

[SGxi]

Not entirely related, but the M3 front and rear bushings cannot fit onto the UUC front and rear sway bars.

[Prowess Symphony]

Originally Posted by SGxi

Not entirely related, but the M3 front and rear bushings cannot fit onto the UUC front and rear sway bars.

ill add that, thanks

[Zink330xi]

I have heard KW V1s fit the XIs, but the KW website says only V3s. I have talked to a guy saying he had V1s, but all others say V3s.

What the hell? Can anyone straighten it out for me?

[SGxi]

V1 is new this year on the xi.

[reprod]

Here is an official KW link for the e92 335xi suspension

http://www.kw-gmbh.de/en/30_Products...BMW&gruppe=all

[derek1822]

BMW Performance Springs... not for 335i, 335xi...
there aren't much options for E90-335xi-09.... I checked daily on the web, BMW specialist....
Seems, Dinan S-pack, or suspension system is the $$ way but not the muffler, many feel like its like made in China quality!!

KW-V3, UCC front and rear sway bars, better way then Dinan's value!

[derek1822]

I even questions BMW specialist why BMW performance parts not for 335i, 335xi.....
Big brake kit, suspension set.....damn all for 128i, 328i....

BMW....make a new line of performance parts for 335i.........

[MMOTION]

anyone try swapping in ZSP rear shocks on a E90 330xi with h&r sport "i" specific springs and retaining original front shocks?