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      09-16-2019, 02:57 PM   #1
sebaNYC
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best option to lower a bit 435 GC

i have a 435 GC m-sport, i want to lower a bit to reduce the gap, on my previous e90 i had Koni yellows and H&R Sport springs, looks great but the ride...... really bad, super hard, especially with the shitty road here in MA.

Whats the best option (look and ride) to lower the 435???

Thanks!
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      09-17-2019, 02:23 PM   #2
anielsen71
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Quote:
Originally Posted by sebaNYC View Post
i have a 435 GC m-sport, i want to lower a bit to reduce the gap, on my previous e90 i had Koni yellows and H&R Sport springs, looks great but the ride...... really bad, super hard, especially with the shitty road here in MA.

Whats the best option (look and ride) to lower the 435???

Thanks!
AC Schnitzer lowering springs.
Same comfort as OEM and lowered just enough to look good.
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      09-17-2019, 06:47 PM   #3
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Quote:
Originally Posted by sebaNYC View Post
i have a 435 GC m-sport, i want to lower a bit to reduce the gap, on my previous e90 i had Koni yellows and H&R Sport springs, looks great but the ride...... really bad, super hard, especially with the shitty road here in MA.

Whats the best option (look and ride) to lower the 435???

Thanks!
Does your car have M Sport (static) or M Adaptive suspension?
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      09-18-2019, 09:36 AM   #4
sebaNYC
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cfm56d7b i have no clue, how can i check that?
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      09-18-2019, 09:37 AM   #5
sebaNYC
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Thanks anielsen71
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      09-18-2019, 09:41 AM   #6
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Originally Posted by sebaNYC View Post
cfm56d7b i have no clue, how can i check that?
Check your VIN through a VIN decoder to be sure.
Or go for a ride where you test in comfort and sport setting.
You should be able to feel the stiffer ride in sport. Mine is equipped with adaptive dampers.
Is a must for me after having a E91 with Bilstein B16 IRC coilovers.
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      09-18-2019, 09:50 AM   #7
sebaNYC
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anielsen71 i found it, yes i do have Adaptative M suspension
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      09-18-2019, 01:18 PM   #8
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I have the eibach pro kit on my 435 with the adaptive suspension and x-drive, the drop is mild but noticeable, and the handling is somewhat stiffer but not overly so. I also changed out the bump stops. I've been meaning to take a picture since I did it but I haven't had a chance with good weather yet (in the Seattle area).
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      09-18-2019, 01:28 PM   #9
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anielsen71, thanks for confirming that your car had M Adaptive suspension.

Having driven in Boston area for quite some time, I agree with you that roads in MA leave to be desired.

Comfortable ride is a function of three things:

- Suspension travel has to be sufficient to accommodate road imperfections
- Compression cycle has to occur quickly enough to allow the shock to absorb the road imperfection without lifting the vehicle
- Rebound cycle has to occur quickly enough to plant the wheel on the road surface and maintain the suspension geometry

This is a topic where "your mileage may vary" applies more than any other descriptor.

Most lowering springs provide one outcome. Either you like it or you don't. There are no tuning options.

Unfortunately, the goals of lowering the vehicle and maintaining comfort are on the opposite sides of each other. Something is needed between these opposing goals.

The answer is coilovers with individually adjustable compression and rebound controls which also allow to maintain OEM suspension height or close to it.

Even in bad road conditions, these coilovers combined with non run flat tires and 19" wheels provide sufficient tuning range to find the right comfort zone for the driver.

Caveat: the cost of coilovers + non run flat tires. M Adaptive suspension functionality will have to be either code out or canceled via EDC Delete module (preferred approach).
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      09-18-2019, 02:05 PM   #10
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Quote:
Originally Posted by cfm56d7b View Post
anielsen71, thanks for confirming that your car had M Adaptive suspension.

Having driven in Boston area for quite some time, I agree with you that roads in MA leave to be desired.

Comfortable ride is a function of three things:

- Suspension travel has to be sufficient to accommodate road imperfections
- Compression cycle has to occur quickly enough to allow the shock to absorb the road imperfection without lifting the vehicle
- Rebound cycle has to occur quickly enough to plant the wheel on the road surface and maintain the suspension geometry

This is a topic where "your mileage may vary" applies more than any other descriptor.

Most lowering springs provide one outcome. Either you like it or you don't. There are no tuning options.

Unfortunately, the goals of lowering the vehicle and maintaining comfort are on the opposite sides of each other. Something is needed between these opposing goals.

The answer is coilovers with individually adjustable compression and rebound controls which also allow to maintain OEM suspension height or close to it.

Even in bad road conditions, these coilovers combined with non run flat tires and 19" wheels provide sufficient tuning range to find the right comfort zone for the driver.

Caveat: the cost of coilovers + non run flat tires. M Adaptive suspension functionality will have to be either code out or canceled via EDC Delete module (preferred approach).
Hi there
You are welcome :-)
Your not entirely right.
Both KW and Bilstein have coil overs that can replace our adaptive M sport suspension.
Personally I will change my dampers with a set plug and play adaptive coil overs from KW when due.
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      09-18-2019, 02:11 PM   #11
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Quote:
Originally Posted by anielsen71 View Post
Quote:
Originally Posted by cfm56d7b View Post
anielsen71, thanks for confirming that your car had M Adaptive suspension.

Having driven in Boston area for quite some time, I agree with you that roads in MA leave to be desired.

Comfortable ride is a function of three things:

- Suspension travel has to be sufficient to accommodate road imperfections
- Compression cycle has to occur quickly enough to allow the shock to absorb the road imperfection without lifting the vehicle
- Rebound cycle has to occur quickly enough to plant the wheel on the road surface and maintain the suspension geometry

This is a topic where "your mileage may vary" applies more than any other descriptor.

Most lowering springs provide one outcome. Either you like it or you don't. There are no tuning options.

Unfortunately, the goals of lowering the vehicle and maintaining comfort are on the opposite sides of each other. Something is needed between these opposing goals.

The answer is coilovers with individually adjustable compression and rebound controls which also allow to maintain OEM suspension height or close to it.

Even in bad road conditions, these coilovers combined with non run flat tires and 19" wheels provide sufficient tuning range to find the right comfort zone for the driver.

Caveat: the cost of coilovers + non run flat tires. M Adaptive suspension functionality will have to be either code out or canceled via EDC Delete module (preferred approach).
Hi there
You are welcome :-)
Your not entirely right.
Both KW and Bilstein have coil overs that can replace our adaptive M sport suspension.
Personally I will change my dampers with a set plug and play adaptive coil overs from KW when due.
Well - a few more details are helpful.

KW and Bilstein Plug and Play coilovers for OEM EDC suspension do not provide individual compression and rebound controls. They simply plug in into the existing EDC harness and prove 2 settings: Comfort and Sport but each with slightly different calibration ranges than OEM Comfort and Sport settings.
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      09-18-2019, 02:16 PM   #12
anielsen71
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Quote:
Originally Posted by cfm56d7b View Post
Quote:
Originally Posted by anielsen71 View Post
Quote:
Originally Posted by cfm56d7b View Post
anielsen71, thanks for confirming that your car had M Adaptive suspension.

Having driven in Boston area for quite some time, I agree with you that roads in MA leave to be desired.

Comfortable ride is a function of three things:

- Suspension travel has to be sufficient to accommodate road imperfections
- Compression cycle has to occur quickly enough to allow the shock to absorb the road imperfection without lifting the vehicle
- Rebound cycle has to occur quickly enough to plant the wheel on the road surface and maintain the suspension geometry

This is a topic where "your mileage may vary" applies more than any other descriptor.

Most lowering springs provide one outcome. Either you like it or you don't. There are no tuning options.

Unfortunately, the goals of lowering the vehicle and maintaining comfort are on the opposite sides of each other. Something is needed between these opposing goals.

The answer is coilovers with individually adjustable compression and rebound controls which also allow to maintain OEM suspension height or close to it.

Even in bad road conditions, these coilovers combined with non run flat tires and 19" wheels provide sufficient tuning range to find the right comfort zone for the driver.

Caveat: the cost of coilovers + non run flat tires. M Adaptive suspension functionality will have to be either code out or canceled via EDC Delete module (preferred approach).
Hi there
You are welcome :-)
Your not entirely right.
Both KW and Bilstein have coil overs that can replace our adaptive M sport suspension.
Personally I will change my dampers with a set plug and play adaptive coil overs from KW when due.
Well - a few more details are helpful.

KW and Bilstein Plug and Play coilovers for OEM EDC suspension do not provide individual compression and rebound controls. They simply plug in into the existing EDC harness and prove 2 settings: Comfort and Sport but each with slightly different calibration ranges than OEM Comfort and Sport settings.
Ohh yes I know that.
For individual settings those cannot be used.
I have had the Bilstein B16 IRC which is the aftermarket solution of adaptive dampers with 3 settings.
And I know I will be satisfied with the adjustments on the similar products today that works with plug and play and can be controlled with the OEM switch.
My point was just, you don't need to code out EDC
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      09-18-2019, 02:37 PM   #13
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If you're going to spend as much $ as KW DDC or Bilstein B16 damptronic I would go with a Fat Cat Motorsports bespoke setup instead.

He uses Bilstein passive dampers as donor units and tunes them to that optimal range of compression/rebound to achieve your goals.

For example, I have "rally" style damping right now where compression and rebound forces are about equal so over many rough features/bumps/ect the car recovers ride height quickly. He tuned the low and mid-speed compression to support the car so I don't bottom out, reduced rebound biasing so the car doesn't lose ride height over repeated rough features (this will bring you into the bump stops and make the ride quality worse) and educated me how to pick springs such that the front/rear ride frequencies reduce pitching/felt body movement. The result is a ride that's smooth, while still allowing the suspension do its job of following the road and maintaining grip.
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      09-23-2019, 12:55 PM   #14
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FaRKle!
Yea, you could be right about that.
But I like the OEM feel and the possibility to switch between comfort and sport.
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