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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > Bilstein b4 vs b12 vs kw1



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      06-01-2015, 06:26 PM   #1
badh3ro
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Bilstein b4 vs b12 vs kw1

Hello!
I've recently got FBO status on my 335i e92 and now looking for slight suspension upgrade.
I need:
Comfort (dd)
Performance
Slight drop front (I do like oem look, but wouldnt say no to 10-20mm drop on front)

Which of those 3 kits would you recommend for a guy whos most likely never going to track his car and has a tight budget?
Bilstein+eibach b4 sport - 420€
B12 - 610€
Kw1 - 820€
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      06-02-2015, 04:00 AM   #2
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B12 or B14 if you want ride height adjustment. Will be enough good for you. Better than KW V1.
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      06-02-2015, 09:06 AM   #3
badh3ro
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Quote:
Originally Posted by swagon View Post
B12 or B14 if you want ride height adjustment. Will be enough good for you. Better than KW V1.
I thought that you couldn't adjust heigh with bilestein+eibch combos :O
What's difference between b4 and b12 pro-kits?
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      06-02-2015, 09:50 AM   #4
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The B12 pro-kit sold in North America will lower your stance but is NOT adjustable.
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      06-02-2015, 10:33 AM   #5
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Quote:
Originally Posted by badh3ro View Post
I thought that you couldn't adjust heigh with bilestein+eibch combos :O
What's difference between b4 and b12 pro-kits?
B4 - replacement dampers
B6 - way better dampers
B8 - shorter B6 dampers
B12 - B8 dampers + Eibach Pro-Kit springs
B14 - height adjustable coilover suspension
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      06-02-2015, 01:07 PM   #6
badh3ro
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Quote:
Originally Posted by swagon View Post
B4 - replacement dampers
B6 - way better dampers
B8 - shorter B6 dampers
B12 - B8 dampers + Eibach Pro-Kit springs
B14 - height adjustable coilover suspension
Thanks!

Do you know how much drop will I get with b12? I have standart m-sport suspension.
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      06-02-2015, 01:47 PM   #7
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The first sticky here in the suspension section may have the answer

http://www.e90post.com/forums/showthread.php?t=613
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      06-02-2015, 02:12 PM   #8
swagon
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Quote:
Originally Posted by badh3ro View Post
Thanks!

Do you know how much drop will I get with b12? I have standart m-sport suspension.
No problem.

For M Sport (15mm lower than standard):

B12: 20mm front & 10mm rear

Now, be aware that since you've got a heavy engine the front will probably lower a few millimeters more once it settles. Search around for pics to see it for yourself.
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      06-02-2015, 04:36 PM   #9
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The B12 Kit with the Eibach springs is the most conservative drop. If you are looking for improved handling and the smallest drop the b12 is the go to.

For anything else I'd go with something else like KW V2 or Bilstein B14.
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      06-05-2015, 08:06 PM   #10
badh3ro
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B12 sounds like something for me, v2-v3 are way to expansive for my taste as I want to get f32 335i or f10 550i in a year.
What would you recomend, b12 or m3 controll arms and maybe subframe bushes?
Am not that interrested in drop, mostly after road control.

Last edited by badh3ro; 06-05-2015 at 08:27 PM..
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      06-06-2015, 08:15 AM   #11
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Quote:
Originally Posted by badh3ro View Post
B12 sounds like something for me, v2-v3 are way to expansive for my taste as I want to get f32 335i or f10 550i in a year.
What would you recomend, b12 or m3 controll arms and maybe subframe bushes?
Am not that interrested in drop, mostly after road control.
B12 + M3 RSFB.

Front control arms will make a difference, too, but if you're planning to get a new car soon, I wouldn't spend so much money.
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      06-07-2015, 06:15 PM   #12
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Quote:
Originally Posted by swagon View Post
Better than KW V1.
What is not good with KW v1?
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      06-07-2015, 06:16 PM   #13
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Quote:
Originally Posted by badh3ro View Post
Kw1 - 820€
Where can you get kw1 for 820Euro? Link?
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      06-09-2015, 10:37 AM   #14
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Quote:
Originally Posted by 325d View Post
Where can you get kw1 for 820Euro? Link?
http://www.ebay.de/itm/KW-Gewindefah...item3cd68b50f6

Saw them cheaper tho.
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