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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > how big difference do shock mounts make....



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      12-02-2017, 01:21 PM   #1
miker2013
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how big difference do shock mounts make....

i am trying to make my vehicle as quiet and vibration free as possible and am wondering about shock mounts?

how much do they insulate the chassis from vibration?

is there a difference between stock e92 mounts, xdrive mounts, dinan, monroe as far as their vibration dampening ability?

thanks
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      12-03-2017, 03:17 AM   #2
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new shocks mounts allow springs and struts to work the way they are supposed to instead of allowing the worn rubber components to squish around

assuming its a daily driver and you dont needs tons of camber, i'd suggest new lemforder oem strut mounts for the front and dinan shock mount for the rear, which is stiffer/better overall tan oem rear mount
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      12-06-2017, 09:54 PM   #3
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check out this video btw, shows how much the stock rear upper shock mount flexes:

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      12-08-2017, 10:28 AM   #4
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Quote:
Originally Posted by Blown95ImpalaSS View Post
new shocks mounts allow springs and struts to work the way they are supposed to instead of allowing the worn rubber components to squish around

assuming its a daily driver and you dont needs tons of camber, i'd suggest new lemforder oem strut mounts for the front and dinan shock mount for the rear, which is stiffer/better overall tan oem rear mount
I replaced my front strut mounts with stock ones, and the front-end was immediately quieter. It looks like my right front was actually blown. When I rotated it by hand it squeaked and clicked. I also use Dinan in the rear. Never had noises there. I don't have any noises now.
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      12-08-2017, 11:51 AM   #5
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Dont forget about the monroe upgrades for the top rear mounts for a cheap improvement. I bought mine off amazon prime for like $12 a piece.

http://www.e90post.com/forums/showthread.php?t=1145344

theres only 1 left in stock at the time of writing, though

https://www.amazon.com/Monroe-907984...=Monroe+907984
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      12-26-2017, 03:28 PM   #6
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10mm or 12mm?
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      12-26-2017, 05:13 PM   #7
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Quote:
Originally Posted by Dan Bilzerian View Post
10mm or 12mm?
Depends on your setup...check the Dinan site for further clarification.
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      12-26-2017, 06:45 PM   #8
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Quote:
Originally Posted by FCobra94 View Post
Depends on your setup...check the Dinan site for further clarification.
Gotcha. I'm going to get the shock mount from strongflex so it'll be full poly.
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      12-26-2017, 07:34 PM   #9
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Since I still have no idea what your setup is, chances are you'll need 10mm.
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      12-26-2017, 11:05 PM   #10
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Quote:
Originally Posted by FCobra94 View Post
Since I still have no idea what your setup is, chances are you'll need 10mm.
Setup is FSD's with Eibach pro kit.
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      12-27-2017, 10:16 AM   #11
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Quote:
Originally Posted by miker2013 View Post
i am trying to make my vehicle as quiet and vibration free as possible and am wondering about shock mounts?

how much do they insulate the chassis from vibration?

is there a difference between stock e92 mounts, xdrive mounts, dinan, monroe as far as their vibration dampening ability?

thanks
I have bilstein B6 all around on stock non-sport springs and non-rft. When I did my suspension I used new oem front top mounts for sport suspension and SP lowering perches. In the back all I did was the B6, new bottom and the Monroe top rear mounts. I ran the car for a few months with everything except the Monroe rear top mounts before finally taking the rears apart again and putting the Monroe mounts in. What I noticed from the Monroe mounts was a big reduction in that secondary bounce feeling that I would get when coming to a complete stop. This was a welcome improvement, I didn't really notice any change in the area of NVH.

When I look at that video that Blown95 posted above, it now makes perfect sense that the harder rubber would stop that secondary bounce feeling. I had no idea there was so much movement with those oem foam/rubber mounts. BMW obviously did that on purpose most likely to counteract the negative ride attributes of the RFT.
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Last edited by cdgatti; 12-28-2017 at 07:20 AM.
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      06-15-2018, 01:21 AM   #12
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Quote:
Originally Posted by FCobra94 View Post
Quote:
Originally Posted by Dan Bilzerian View Post
10mm or 12mm?
Depends on your setup...check the Dinan site for further clarification.
How would one know to get 10mm or 12mm I'm running the mfactory ycw coilovers for my 335xi
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      06-20-2018, 12:49 PM   #13
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Quote:
Originally Posted by Julian2485 View Post
Quote:
Originally Posted by FCobra94 View Post
Quote:
Originally Posted by Dan Bilzerian View Post
10mm or 12mm?
Depends on your setup...check the Dinan site for further clarification.
How would one know to get 10mm or 12mm I'm running the mfactory ycw coilovers for my 335xi
I second this question.

I'm using stock sport springs and B6.

Does one get 10 or 12mm?
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      06-20-2018, 09:43 PM   #14
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12mm is usually for certain coilover setups and M3 struts. If you swapped over the OEM mounts, it's 10mm.
I'd check the install instructions / diagrams if they have a measurement of the strut rod or measure it yourself.
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