HR sport spring vs KW DDC Plug Play coilover

Lada-1 · 11-24-2023, 10:44 AM

The car is equipped with the M adaptive suspension. Currently have the HR sport springs 28832-2 which should lower the front and rear ends by 45mm and 30mm. The ride is too harsh. Cannot feel a difference between comfort and sport.
Im thinking of KW DDC Plug Play coilovers. KW DDC minimal lowering is: 25mm front and 35mm rear

- can I expect a better feeling - less harsh during the ride ?

- Is the KW DDC lowering the rear actually by additionally 5mm ?

Actual picture of the rear fender x tire(255/40/18). Does not seem to me there is an additional 5mm space - at least I wouldn't like to decrease the gap.

Watsey · 11-24-2023, 11:10 AM

H&R springs are renowned for giving a harsh ride.

Before you make any changes I'd research the spring rates for the KW DDC versus H&R. Informed choices are better than blind hope.

cfm56d7b · 11-25-2023, 11:08 AM

Your experience with HR Sport Springs echoes the experience of others.

Since KW DDC PnP coilovers are being considered, your budget appears to be quite flexible.

How would you describe your suspension improvement goals? There are several options in your budget range.

alohasurftoad · 11-25-2023, 01:41 PM

H&R is lowering too much up front and is putting undue stress on the front half axles and increasing the possibility of the axles popping out.

Eibach spring rates will provide the best ride quality and lowering that will not cause harm. I recommend switching to Eibach Pro-Kit '5-22 with F80 bumpstops.

https://www.eibachshop.com/index.php...-springs-bmw-3

here's a few threads with 5-22
https://f30.bimmerpost.com/forums/sh....php?t=1901058
https://f30.bimmerpost.com/forums/sh....php?t=1501682
https://f30.bimmerpost.com/forums/sh....php?t=1892376
.

StealthF32 · 11-25-2023, 03:34 PM

Quote:

Originally Posted by alohasurftoad

H&R is lowering too much up front and is putting undue stress on the front half axles and increasing the possibility of the axles popping out.

Eibach spring rates will provide the best ride quality and lowering that will not cause harm. I recommend switching to Eibach Pro-Kit '5-22 with F80 bumpstops.

https://www.eibachshop.com/index.php...-springs-bmw-3

here's a few threads with 5-22
https://f30.bimmerpost.com/forums/sh....php?t=1901058
https://f30.bimmerpost.com/forums/sh....php?t=1501682
https://f30.bimmerpost.com/forums/sh....php?t=1892376
.

.....whats the eibach prokit that would be best compatible for F32 (2K15 428i drive)?

alohasurftoad · 11-25-2023, 04:59 PM

Quote:

Originally Posted by StealthF32

.....whats the eibach prokit that would be best compatible for F32 (2K15 428i drive)?

https://www.eibachshop.com/index.php...gs-bmw-4-coupe

Zoomz · 11-25-2023, 09:07 PM

I’ve just installed the KW DDC PnP on my 2018 f36. Ride is ridiculously smooth and comfortable. If anything, it could be firmer still for spirited driving. I mostly keep it in Sport + and can’t tell it’s anything unusual unless the road is fairly rough. The lowering control is also excellent, of course. I have it lowered a bit over an inch all around. I’m getting some creaking sounds I’m trying to resolve, and am researching if it’s advisable to swap in moderately firmer front springs, but otherwise am pleased.

Lada-1 · 11-29-2023, 05:05 AM

so for my car there is the Eibach spring set https://www.eibachshop.com/index.php...-bmw-3-touring I assume this would give me a less harsh driving experience than H&R .
So debating if to go with this route and keep my current OEM dampers or to go with the KW DDC PnP set.
Car has 80k km now. Not sure if the OEM dampers will last another 20k km...

11-24-2023, 10:44 AM	#1
Lada-1 Private 6 Rep 63 Posts Drives: F31 340iX Join Date: Sep 2022 Location: CZ iTrader: (0)	HR sport spring vs KW DDC Plug Play coilover The car is equipped with the M adaptive suspension. Currently have the HR sport springs 28832-2 which should lower the front and rear ends by 45mm and 30mm. The ride is too harsh. Cannot feel a difference between comfort and sport. Im thinking of KW DDC Plug Play coilovers. KW DDC minimal lowering is: 25mm front and 35mm rear - can I expect a better feeling - less harsh during the ride ? - Is the KW DDC lowering the rear actually by additionally 5mm ? Actual picture of the rear fender x tire(255/40/18). Does not seem to me there is an additional 5mm space - at least I wouldn't like to decrease the gap. Attached Images
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11-24-2023, 11:10 AM	#2
Watsey Major General 6420 Rep 8,500 Posts Drives: F31 330D sDrive M Sport Join Date: Jun 2015 Location: On sabbatical. iTrader: (1)	H&R springs are renowned for giving a harsh ride. Before you make any changes I'd research the spring rates for the KW DDC versus H&R. Informed choices are better than blind hope. __________________ Current : F31 330sD, remapped, Ohlins Road & Track, Millway camber plates, Quaife LSD, Stoptech brakes + Pagid RSL1 pads all round, Weichers front strut brace, Eibach front & rear anti-roll bars, Michelin MP4S.
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11-25-2023, 11:08 AM	#3
cfm56d7b Lieutenant General 5886 Rep 10,256 Posts Drives: 2017 440i Gran Coupe & 2015 X5 Join Date: Nov 2012 Location: Orange County, CA iTrader: (2)	Your experience with HR Sport Springs echoes the experience of others. Since KW DDC PnP coilovers are being considered, your budget appears to be quite flexible. How would you describe your suspension improvement goals? There are several options in your budget range.
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11-25-2023, 01:41 PM	#4
alohasurftoad Brigadier General 3082 Rep 4,333 Posts Drives: 440i gran coupe w/mppsk Join Date: Apr 2015 Location: hawaii iTrader: (0)	H&R is lowering too much up front and is putting undue stress on the front half axles and increasing the possibility of the axles popping out. Eibach spring rates will provide the best ride quality and lowering that will not cause harm. I recommend switching to Eibach Pro-Kit '5-22 with F80 bumpstops. https://www.eibachshop.com/index.php...-springs-bmw-3 here's a few threads with 5-22 https://f30.bimmerpost.com/forums/sh....php?t=1901058 https://f30.bimmerpost.com/forums/sh....php?t=1501682 https://f30.bimmerpost.com/forums/sh....php?t=1892376 . Last edited by alohasurftoad; 11-25-2023 at 01:47 PM..
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11-25-2023, 09:07 PM	#7
Zoomz New Member 15 Rep 27 Posts Drives: 440i Gran Coupe, 718 Cayman S Join Date: Oct 2022 Location: Seattle iTrader: (0)	I’ve just installed the KW DDC PnP on my 2018 f36. Ride is ridiculously smooth and comfortable. If anything, it could be firmer still for spirited driving. I mostly keep it in Sport + and can’t tell it’s anything unusual unless the road is fairly rough. The lowering control is also excellent, of course. I have it lowered a bit over an inch all around. I’m getting some creaking sounds I’m trying to resolve, and am researching if it’s advisable to swap in moderately firmer front springs, but otherwise am pleased.
	Appreciate 0 Quote

11-29-2023, 05:05 AM	#8
Lada-1 Private 6 Rep 63 Posts Drives: F31 340iX Join Date: Sep 2022 Location: CZ iTrader: (0)	so for my car there is the Eibach spring set https://www.eibachshop.com/index.php...-bmw-3-touring I assume this would give me a less harsh driving experience than H&R . So debating if to go with this route and keep my current OEM dampers or to go with the KW DDC PnP set. Car has 80k km now. Not sure if the OEM dampers will last another 20k km...
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