[stevesingo]

I'm looking in to the possibility of refreshing the suspension on our 2007 E90 330i (N52) M Sport and I have a couple of questions?

1. Does anyone have a definitive list of parts to order Front and Rear (OEM or OEM Equivalent) i.e bushes, arms spring pads etc?

2. What is the difference in ride if I switch to bilstiens whilst retaining stock springs. I don't want it lower!

[ppointer]

I can answer #2 for you:

I have installed B4's in our E46 and E60. After break in they ride a little better than stock (better rebound control). They are not stiffer.

I installed B6's in our M Roadster (Z3). Just better all around on the street; very happy with this setup. Not the best track setup IMHO.

My E90 m-sport won't need refreshing for a while. When it does I will go with B6's.

[rasa bmw]

control arms/radius arms and drop links all febi bilstein and suplex front springs for my e90 330d..didnt want lowered but wanted normal,,was purt onto the suplex from a company i forget but they said they were same as standard..sachs front shocks also,,all in the last 18 months

[gaz_ball]

This is what I fitted to my E91 M-sport when I did a suspension refresh. I took the opportunity to fit Powerflex bushes, M3 front arms and a Bilstein B12 kit, which might not be relevant to you but the standard ARB links and spring/damper mountings are listed:

Bilstein B12 Pro kit 46-180599


Powerflex bushes:

2 x PFF5-4602-26.5

2 x PFR5-4609-13

10 x PFR5-411

4 x PFR5-412

2 x PFR5-413

2 x PFR5-414

2 x PFR5-415

2 x PFR5-420

2 x PFR5-422

2 x PFR5-425

1 x PFR5-426


E90 M3 front lower control arms (bushes come pre-installed):

1 x TRW JTC1423

1 x TRW JTC1424

1 x TRW JTC1426

1 x TRW JTC1427

1 x BMW 37142283867 (regulating rod for front headlight vertical aim control sensor)


Front & rear ARB drop links:

1 x LEMFÖRDER 2993401

1 x LEMFÖRDER 3536401

2 x LEMFÖRDER 3536501


Replacement spring/damper mounting parts:

2 x SPRING PAD UPPER - BMW 31336767500

2 x SPRING PAD LOWER - BMW 31336764372

2 x Repair kit for support bearing - BMW 31352405884

2 x Upper spring plate - BMW 31336764093

2 x Repair kit for support bearing - BMW 33522406280

2 x SPRING PAD LOWER - BMW 33536764420

2 x SPRING PAD UPPER - BMW 33536764419

2 x Spring pocket - BMW 41147057297

2 x LEMFÖRDER 3539801

[Sensible_]

Originally Posted by stevesingo

I'm looking in to the possibility of refreshing the suspension on our 2007 E90 330i (N52) M Sport and I have a couple of questions?

1. Does anyone have a definitive list of parts to order Front and Rear (OEM or OEM Equivalent) i.e bushes, arms spring pads etc?

2. What is the difference in ride if I switch to bilstiens whilst retaining stock springs. I don't want it lower!

If your springs are originals from 2007. I'd look at replacing them also.

Springs depends on vehicle options. The D Number should be on a little white label attached to the springs.