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E90/E91/E92/E93 (2006 - 2013)
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  #1  
Old 12-16-2013, 09:36 PM
notanotherbmw notanotherbmw is offline
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Mein Auto: 2007 320i e90 sedan
Lowering Springs for E90

I want to lower my 2007 E90 about 1". It is sitting on 19" Koyo rims, but I am going to replace them with 18".

Couple of questions:
1. will lowering springs play havoc with the sensors? I dont want to have beeping every time I hit a small bump;

2. what is a good spring to get? What part number?

3. Does anyone have any photos of their e90 lowered 1"?

Thanks
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  #2  
Old 12-17-2013, 02:34 AM
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CALWATERBOY CALWATERBOY is offline
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Quote:
Originally Posted by notanotherbmw View Post
I want to lower my 2007 E90 about 1". It is sitting on 19" Koyo rims, but I am going to replace them with 18".

Couple of questions:
1. will lowering springs play havoc with the sensors? I dont want to have beeping every time I hit a small bump;

2. what is a good spring to get? What part number?

3. Does anyone have any photos of their e90 lowered 1"?

Thanks

Are you unfamiliar with inherent alignment issues?

What beeping are you concerned about?

Have you heard of matched shocks/springs and importance thereof?

Info on above + photos available at the website of Messrs Page & Brin.
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  #3  
Old 12-17-2013, 02:44 AM
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CALWATERBOY CALWATERBOY is offline
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.

Oh, another thing - some say I'm nuts - not seeing how rim size has an impact on your project.

Sure will change ride quality though.


What you want to do is ill advised: Lowering for looks, a poseur move. Far more expensive than you think, to resolve all issues created. Maybe I can start you thinking with this: Shocks are designed for much less travel than most people realize.
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  #4  
Old 12-17-2013, 05:19 PM
notanotherbmw notanotherbmw is offline
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I have found King Springs lower the car only 1.5", which seems similar to the M Sport springs. $300+250 to install. The standard springs just look and feel too high.

I dont think that lowering the car slightly will affect DSC/DTS system. I have read that giving the car a bit or hitting bumps/potholes sends off the DSC/DTS warnings.

Have anyone installed similar springs?
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  #5  
Old 12-17-2013, 05:24 PM
notanotherbmw notanotherbmw is offline
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inherent alignment issues - do you mean toe, camber etc? I had a lowered Commodore and had to adjust the camber etc. It was only seriously affected if you go below 1-1.5". Is this the same for the BMW 3 series? Can you stay with the stock struts(?).

While I am here - does the 2007 e90 have magnetic ride control? This is my first BMW, so I dont know a lot about them.
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  #6  
Old 12-17-2013, 06:48 PM
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CALWATERBOY CALWATERBOY is offline
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Quote:
Originally Posted by notanotherbmw View Post
inherent alignment issues - do you mean toe, camber etc? I had a lowered Commodore and had to adjust the camber etc. It was only seriously affected if you go below 1-1.5". Is this the same for the BMW 3 series? Can you stay with the stock struts(?).

While I am here - does the 2007 e90 have magnetic ride control? This is my first BMW, so I dont know a lot about them.

If you're lowering a Sport suspension 1" or more, you may hit bump stops and desired camber may be impossible w/o new suspension arm[s].

Shock length will change.

You need to match shock rates to springs.

No magnetic ride control....something that really needs to be addressed. My understanding: New adj suspension is NOT magnetorheological. Lordy, lordy lordy....
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  #7  
Old 12-18-2013, 12:42 AM
notanotherbmw notanotherbmw is offline
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OK. 1" should be low enough. And I can put these in without new shocks?

I believe that's what the M Sport suspension is? Ive got some nice wheels on the car, but they are spoiled by the massive air gap.
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  #8  
Old 12-18-2013, 06:14 AM
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Quote:
Originally Posted by notanotherbmw View Post
OK. 1" should be low enough. And I can put these in without new shocks?

I believe that's what the M Sport suspension is? Ive got some nice wheels on the car, but they are spoiled by the massive air gap.

Posted what you should do in your other thread this morn - depending on selected spring rate, alignment; ride height, unbelievable grip can be yours. Jay [Ground Control] says Street/School lowers up to an inch - I went 3/4" lower than Sport and with not too high spring rates, it seemed to roll more in turns.

Then I noticed....nothing was keeping up. The roll was due to much high cornering force than I felt comfortable with previously w/stock suspension. Wow!
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  #9  
Old 12-18-2013, 04:33 PM
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Greggl52 Greggl52 is offline
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Quote:
Originally Posted by notanotherbmw View Post
I want to lower my 2007 E90 about 1". It is sitting on 19" Koyo rims, but I am going to replace them with 18".

Couple of questions:
1. will lowering springs play havoc with the sensors? I dont want to have beeping every time I hit a small bump;

2. what is a good spring to get? What part number?

3. Does anyone have any photos of their e90 lowered 1"?

Thanks
Really, I have a 2008 328xi sedan and it sits pretty low. I already have no paint on the bottom of the front bumper because i hit a bump and it bottomed out on the highway. I think you should rethink about lowering your e90.
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  #10  
Old 12-18-2013, 06:31 PM
jnew_85 jnew_85 is offline
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I was thinking about getting my e90 leveled out but wasn't sure about it either. Keep the posts coming to see what everyone thinks.
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  #11  
Old 12-18-2013, 08:53 PM
notanotherbmw notanotherbmw is offline
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What about standard M Sport springs. Arent they about 1" lower than the standard BMW?

(Ive just started getting into BMWs, so I don't know a lot about them)
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  #12  
Old 03-07-2014, 11:02 PM
notanotherbmw notanotherbmw is offline
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Seriously considering putting either M Sport springs or the HandR springs. Can these be put in without changing the struts? Can the standard struts be damaged lowering it this low?
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  #13  
Old 03-07-2014, 11:03 PM
notanotherbmw notanotherbmw is offline
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bump
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