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E90/E91/E92/E93 (2006 - 2013)
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Old 07-29-2013, 08:04 PM
sle39lvr sle39lvr is offline
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Location: South Florida
 
Join Date: Dec 2012
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Mein Auto: 08 E90
Suspension Gurus: Bump Stop Question



So my Non-Sport E90 has M3 parts in it and waiting for it's coil overs next.

Meanwhile, I noticed that I have longer bump stops than Sport-Package people and compared to the length and position of the bump stops, car is almost riding on the bump stops (may be 1/2" shock travel before hitting?).

What's the intent of this? BMW designed this in order to get the 'Sporty' ride and 'tightness'?

----------------------------------------------------

I am researching on what bump stops to get when I get coil overs and so far I've been advised to get E36 front bump stops and Z4M rear ones, which both are way shorter.

However, today, I decided to cut the bump stops short, as an experiment (coil overs are like a month away). I jacked up the car and cut 1 bubble out from all four corners (close to 1/4" out). I went for a ride, the car feels really soft. I am not sure I like this. It' feels less 'tight' and 'steady', but more comfortable for sure.
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Old 07-29-2013, 11:57 PM
CALWATERBOY's Avatar
CALWATERBOY CALWATERBOY is offline
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Location: San Francisco
 
Join Date: Aug 2009
Posts: 10,009
Mein Auto: 2009 E93 N54
Quote:
Originally Posted by sle39lvr View Post
So my Non-Sport E90 has M3 parts in it and waiting for it's coil overs next.

Meanwhile, I noticed that I have longer bump stops than Sport-Package people and compared to the length and position of the bump stops, car is almost riding on the bump stops (may be 1/2" shock travel before hitting?).

What's the intent of this? BMW designed this in order to get the 'Sporty' ride and 'tightness'?

----------------------------------------------------

I am researching on what bump stops to get when I get coil overs and so far I've been advised to get E36 front bump stops and Z4M rear ones, which both are way shorter.

However, today, I decided to cut the bump stops short, as an experiment (coil overs are like a month away). I jacked up the car and cut 1 bubble out from all four corners (close to 1/4" out). I went for a ride, the car feels really soft. I am not sure I like this. It' feels less 'tight' and 'steady', but more comfortable for sure.

Ride height.

Sport suspension rides lower; my coilovers ride 1/2" lower yet. With the right setup you can have unending grip....
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