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      12-01-2020, 11:54 AM   #199
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Flatout suspension

I searched the thread and did not find any mention of "Flatout Suspension" does anyone have any experience with these? It seems the company is only 3-4 years old but their website/info seems pretty legit. 3 year warranty included.

https://flatoutsuspension.net/products/BMW4-sr

Last edited by CrimsonXV; 12-01-2020 at 08:18 PM.. Reason: fixed typo
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      12-01-2020, 12:17 PM   #200
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Quote:
Originally Posted by CrimsonXV View Post
I searched the thread and did not find any mention of "Flatout Suspension" does anyone have any experience with these? It seems the company is only 3-4 years old but they're website/info seems pretty legit. 3 year warranty included.

https://flatoutsuspension.net/products/BMW4-sr
There's a thread here where someone reviews it. And the most recent user to install is FastF30

I ordered mine last weekend. Made to order so it will be a few weeks until receipt, and then a few until I install them maybe.

For the price you get a lot. Similar to BC, Fortune Auto and the like with a lot of modularity and adjustability. With any of these you are paying for the support and ease of rebuilding.

These however are on the side of PSS10s, Ohlins and V3 with the inverted rear. Adjuster is on the bottom. Their Black Friday sale that just passed was 30% off so it was a major deal. I picked up the St that inverts both front and rear as well as adds external reservoirs in the rear (Clubsport feature on Bilstein and KW).
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      12-01-2020, 11:36 PM   #201
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Quote:
Originally Posted by CrimsonXV View Post
I searched the thread and did not find any mention of "Flatout Suspension" does anyone have any experience with these? It seems the company is only 3-4 years old but their website/info seems pretty legit. 3 year warranty included.

https://flatoutsuspension.net/products/BMW4-sr
All I can say is that they are worth it... strut bar and these coilovers are perfect for street driving... I just put another 30miles today of various city/ city highway driving and there is nothing I would change... car really drives like it should of in the first place... set fenders from ground 25-3/4"F/25-7/8"R ... car rides flat and still handles all bumps.. sit's low enough to look good and still functional to live with...car is very directional... where you point it goes... For the quality and money you can't beat'em..

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      03-17-2021, 11:37 AM   #202
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Has anyone here done a comparison of the Bilstein B16 damptronics vs. the KW variant 1 with EDC retain on an F36 x-drive?
I'm looking to lower the unicorn but keep the EDC functionality, and since I've never even considered this with a prior car, I literally have no clue what I'm doing.
The only thing I know so far is the KW setup is about half the price of the Bilstein.
If I've failed to , my apologies, and pls point a brother in the right direction.
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      06-07-2021, 07:05 PM   #203
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Quote:
Originally Posted by andino View Post
Best out of box coilover for the f3x that I've driven. They don't go very low if that's what you want though. But great performance and comfort for daily driving and still capable on track.
Just wondering what is the adjustment range for these if anyone knows. Most seem to be in the 30-50mm lower than stock adjustment range from what I have seen but not sure what the Ohlins do.

In the manual is says:

One turn equals 2mm height change. In the
standard position the upright bracket edge is
8 mm below the strut casing bottom.
Adjustment range ±15mm from standard
position.

From my reading the Ohlins almost achieve stock height so say 10mm less than stock. I am assuming "standard position" is the recommended height that Ohlin recommends and not stock height? Then it appears you have a 30mm adjustment range so total lowered would be 40mm lower than stock. Maybe I am assuming too much though. Anyone have actual numbers Vs my guess of "what's in the box?"
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      07-08-2021, 03:58 PM   #204
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      11-25-2021, 02:13 AM   #205
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Quote:
Originally Posted by NISFAN View Post
Just chipping in to share my option.

I fitted Bilstein PSS10 B16 KOMFORT to my F30 (48-229012). These have a longer spring than the normal B16 PSS10. Lowering is in the -10-30mm range, not the -30-50mm range for the normal version. I didn't want to go that low.

I fitted them because I don't rate the standard M Sport suspension ( I've had both Adaptive and passive, both suck!!!). Verdict, wow what a transformation, the car now rides like an M3/M4, no jokes it really does stick to the road. It is also far less crashy when going over potholes, etc. An amazing transformation

I was just debating weather to spend the extra money for the bilsteins. Thank you for the review.
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      03-01-2022, 06:58 AM   #206
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Looking for recommendations on Coilovers
I am currently running H&R springs on stock struts, its time for a major upgrade
I live in NYC so potholes and bumpy roads are a big problem. I am not a racer or a track guys, I just want a nice stance with as smooth of a ride as I can get. This is my daily so i need it to be smooth. Definitely don't want to break the bank. I was Looking at KW STREET COMFORT, any input on these?
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      04-12-2022, 08:48 AM   #207
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I have searched a few sites and it seems the Bilstein B16 Damptronics are all on vacation for a while. My 440i rear shocks are leaking. Decided now was the time to pull the trigger.

Earliest ship day is July 29. I ordered them in March. If I can remember 4 months from now, I will post an update.
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      04-12-2022, 09:22 AM   #208
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Quote:
Originally Posted by FastF30 View Post
Quote:
Originally Posted by CrimsonXV View Post
I searched the thread and did not find any mention of "Flatout Suspension" does anyone have any experience with these? It seems the company is only 3-4 years old but their website/info seems pretty legit. 3 year warranty included.

https://flatoutsuspension.net/products/BMW4-sr
All I can say is that they are worth it... strut bar and these coilovers are perfect for street driving... I just put another 30miles today of various city/ city highway driving and there is nothing I would change... car really drives like it should of in the first place... set fenders from ground 25-3/4"F/25-7/8"R ... car rides flat and still handles all bumps.. sit's low enough to look good and still functional to live with...car is very directional... where you point it goes... For the quality and money you can't beat'em..

Attachment 2473899

Attachment 2473900

Attachment 2473901

Attachment 2473902
How are these holding up?
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      04-12-2022, 11:21 AM   #209
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Quote:
Originally Posted by So Good F30 View Post
Looking for recommendations on Coilovers
I am currently running H&R springs on stock struts, its time for a major upgrade
I live in NYC so potholes and bumpy roads are a big problem. I am not a racer or a track guys, I just want a nice stance with as smooth of a ride as I can get. This is my daily so i need it to be smooth. Definitely don't want to break the bank. I was Looking at KW STREET COMFORT, any input on these?
KW Street Comfort coilovers were installed in my previous F30 335i. Great product. I sense for NYC roads even KW Street Comfort coilovers may be too stiff.
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      06-19-2022, 01:17 PM   #210
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Anyone else have experience with Flatout Suspension SR? looks like a lot of value with this product.
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      06-22-2022, 09:07 AM   #211
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'17 440i xDrive on KW street comforts with EDC. Initial setting was in the middle for almost a month while I drove on Texas roads. Felt a little to cushy for me in sport mode. Clicked them one notch harder. Comfort is stiffer than before and I almost miss the cushy feel it used to offer, but sport is a ton better and worth the loss of comfort cushion.
Height is currently set to the highest they will go which ultimately dropped the car about an inch all around.
I think the xDrive weight is a lot to deal with so I may end up swapping out my sway bars in the future. I do have the front strut brace which does help, but not enough.

https://photos.app.goo.gl/XTzU6FMnEGf6o8zU7
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      06-22-2022, 09:53 AM   #212
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anyone ever use VOGTLAND coilover? it seems like they are offering for F30, but i see most of their lineup is for VW.

thanks.
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      06-22-2022, 11:05 AM   #213
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Quote:
Originally Posted by BeFitty8_F32 View Post
'17 440i xDrive on KW street comforts with EDC. Initial setting was in the middle for almost a month while I drove on Texas roads. Felt a little to cushy for me in sport mode. Clicked them one notch harder. Comfort is stiffer than before and I almost miss the cushy feel it used to offer, but sport is a ton better and worth the loss of comfort cushion.
Height is currently set to the highest they will go which ultimately dropped the car about an inch all around.
I think the xDrive weight is a lot to deal with so I may end up swapping out my sway bars in the future. I do have the front strut brace which does help, but not enough.

https://photos.app.goo.gl/XTzU6FMnEGf6o8zU7
You made an excellent coilover choice. KW is high quality and they do an excellent job of matching up spring rates with the correct dampers.

(Note: Bilstein does a terrible job of this especially with the B16's that use front springs that are way too stiff.)

You mentioned sway bars. I'm a big proponent of upgrading sway bars. It's not done very much on the F3x simply because the sway bars are buried so the labor is expensive to remove everything in the way to get to them.

Get solid sway bars. There are many examples of hollow bars suddenly snapping.

Choosing sway bars is mostly dependent on the front and rear spring rates. FaRKle! has written about this so search on his posts and check out his YouTube channel.

https://youtube.com/user/FaRKle0079

For your KW Comfort setup I'd consider a front H&R 28mm sway bar. See photo. The rear H&R 20mm sway bar can be a little too strong and effect the rear tire contact. Other options are the BMW 15mm rear bar or the KC Design 17mm rear bar. (For comparison my '15 335ix came with a stock 12mm rear bar. Other BMW models have smaller rear bars.)

I really enjoy driving my car with upgraded suspension and upgraded sway bars. A well matched set of sway bars significantly reduces body roll on curves so the car corners flat!

Hope this helps!
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      06-24-2022, 05:28 PM   #214
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I just ordered 18x9 ET31 EC-7s and some PS4s 245/40-18. Luckily for me, roughly 3 weeks before the wheels arrive, my front struts are failing.

Anyways, I'm tempted by The Bilstein P14 PSS. I live in Maine and would prefer the stock ride height during the winter, but dropping it an inch in the Summer would looks great. Any opinions on this set up? Am I being a space cadet with this dream of +/- 1" or whatever between seasons? Would these be much of a change in comfort or handling to the stock set up?
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      06-24-2022, 06:14 PM   #215
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Quote:
Originally Posted by GENAU View Post
I just ordered 18x9 ET31 EC-7s and some PS4s 245/40-18. Luckily for me, roughly 3 weeks before the wheels arrive, my front struts are failing.

Anyways, I'm tempted by The Bilstein P14 PSS. I live in Maine and would prefer the stock ride height during the winter, but dropping it an inch in the Summer would looks great. Any opinions on this set up? Am I being a space cadet with this dream of +/- 1" or whatever between seasons? Would these be much of a change in comfort or handling to the stock set up?
How important is it for you to maintain comfortable ride with the bar being set by the stock suspension that you are used to?

Helpful thread to review: https://f30.bimmerpost.com/forums/sh....php?t=1708091

KW Street Comfort coilovers would be my personal choice if I had to choose between KW and Bilstein coilovers. My previous vehicle had KW Street Comfort coilovers - nearly perfect balance between comfort and improved suspension behavior.
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      06-24-2022, 06:55 PM   #216
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Quote:
Originally Posted by cfm56d7b View Post
Quote:
Originally Posted by GENAU View Post
I just ordered 18x9 ET31 EC-7s and some PS4s 245/40-18. Luckily for me, roughly 3 weeks before the wheels arrive, my front struts are failing.

Anyways, I'm tempted by The Bilstein P14 PSS. I live in Maine and would prefer the stock ride height during the winter, but dropping it an inch in the Summer would looks great. Any opinions on this set up? Am I being a space cadet with this dream of +/- 1" or whatever between seasons? Would these be much of a change in comfort or handling to the stock set up?
How important is it for you to maintain comfortable ride with the bar being set by the stock suspension that you are used to?

Helpful thread to review: https://f30.bimmerpost.com/forums/sh....php?t=1708091

KW Street Comfort coilovers would be my personal choice if I had to choose between KW and Bilstein coilovers. My previous vehicle had KW Street Comfort coilovers - nearly perfect balance between comfort and improved suspension behavior.
I second your opinion. I'd go with the KW SC over the Bilstein's any day. KW matches the springs and dampers, where Bilstein's are overly stiff.
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      06-25-2022, 08:53 PM   #217
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I definitely don't want it to be too stiff as our roads are pretty rough occasionally and it's my daily. The KWs sound better but they are much more pricey. You get what you pay for i suppose.

Edit: is there an alternative that has the adjustable height while still being close to $1000.i may just have to get the struts.

Last edited by GENAU; 06-26-2022 at 12:33 PM..
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      07-02-2022, 04:10 PM   #218
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Quote:
Originally Posted by johnung View Post
I second your opinion. I'd go with the KW SC over the Bilstein's any day. KW matches the springs and dampers, where Bilstein's are overly stiff.
Hello Johnung- Thinking about having coilovers installed on my 2017 F32 440ix. I was comparing Bilstein and KW and see that you recommend KW. So do you believe the KW Street Comfort coilovers are the better choice for an F32?

BTW, I took your advice and had MPBBK installed and changed the stock pads to Hawk High Performance Street (HPS 5.0) and added stainless steel brake lines. Much less dust with the Hawk pads over OEM. Superb braking.
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      07-03-2022, 08:18 PM   #219
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Quote:
Originally Posted by JNMNL52 View Post
Quote:
Originally Posted by johnung View Post
I second your opinion. I'd go with the KW SC over the Bilstein's any day. KW matches the springs and dampers, where Bilstein's are overly stiff.
Hello Johnung- Thinking about having coilovers installed on my 2017 F32 440ix. I was comparing Bilstein and KW and see that you recommend KW. So do you believe the KW Street Comfort coilovers are the better choice for an F32?

BTW, I took your advice and had MPBBK installed and changed the stock pads to Hawk High Performance Street (HPS 5.0) and added stainless steel brake lines. Much less dust with the Hawk pads over OEM. Superb braking.
Yes I'd get KW coilovers over Bilstein. I've heard people complain that their Bilstein are overly stiff because they choose spring rates that are too high. On the other hand I've only heard praise for the ride of KWs.

Hey, glad that you are happy with your brake upgrade. Take care!
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      11-17-2022, 03:43 PM   #220
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Hello guys,

sorry to hijack this thread.

I ask that question on a seperate thread and haven't got many answers, so I'll try my luck here..

I am intersted in upgrading my suspensions.

My car is a 340i xdrive, with adaptative suspensions, M Package, on 18' summer wheels (17' with the winter wheels).

I've installed vac monoballs control arms in the front, for better steering feel and responsivness.

I would like my car to feel more connected, a bit less floaty, with less squat under acceleration, but still want a high degree of confort, if possible, as it's my daily driver. I won't track that car.

Currently, I am doubting between the following setups:

-KW ddc (to retain adaptative suspensions);

-KW V2 street confort (as I lean toward a more confortable ride);

-KW V3 (as it would allow me to customize compression and rebound, and therefore adjust the setup for a confortable ride, on paper);

My questions:

-does the ride confort of KW ddc (plug and play) is impacted (and to what extent) by the height adjustment ? In oher words, If I set up the height to max, would it be more confortable than lower (I am not interested in the lower look anyway) ? I ask this because many people seem to find the ddc to harsh, but I wonder if it's due to lowering to much the height, and because of the wheel they have.

-would the V3 be more confortable than the KW ddc, if I adjust the V3 compression/rebound settings to the soft side ?

-how the V2 Street Confort compare to the confort mode of the OEM adaptative suspension ? are they more confortable, or are they firmer than stock confort, like OEM sport mode ?

Many thanks for you answers!
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