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      08-20-2014, 03:02 AM   #1
J Lau
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E89 w/ H&R Sport Springs

Hi guys,

I have received a few PMs from forum members regarding the H&R Sport Springs.

Here are some figures that may help anyone who is interested in them.

I have 235/35 19 for the front and 265/30 19 for the rear. Don't ask me why the radius' are not 25.48" and 25.26". Maybe my tires are flats or maybe my measurement tape is off, but these are the actual measurements from concrete floor to edges of both fenders.

In terms of ride quality, I think they're just okay. IMO it isn't too different from stock setup. In fact, they're on the soft side, so don't expect handling improvement from these springs. Your Z4 will still roll like a boat.



J LAU
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      08-20-2014, 10:00 AM   #2
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Looks nice!
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      08-20-2014, 10:50 AM   #3
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Quote:
Originally Posted by J Lau View Post
Hi guys,

I have received a few PMs from forum members regarding the H&R Sport Springs.

Here are some figures that may help anyone who is interested in them.

I have 235/35 19 for the front and 265/30 19 for the rear. Don't ask me why the radius' are not 25.48" and 25.26". Maybe my tires are flats or maybe my measurement tape is off, but these are the actual measurements from concrete floor to edges of both fenders.

In terms of ride quality, I think they're just okay. IMO it isn't too different from stock setup. In fact, they're on the soft side, so don't expect handling improvement from these springs. Your Z4 will still roll like a boat.



J LAU
Thanks, and I agree, I have the H&R's as well, you are pretty on point. =]
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      08-20-2014, 11:05 AM   #4
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Looks sweet. What suspension did your car have from factory? Standard, adaptive M or non-adaptive M?
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      08-20-2014, 12:07 PM   #5
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Quote:
Originally Posted by Asbjorn
Looks sweet. What suspension did your car have from factory? Standard, adaptive M or non-adaptive M?
Hi Asbjorn,

Good that you ask. Surprisingly, I do have Adaptive M Suspensions. I didn't even know until you ask, maybe because I don't really feel the different on the stiffness after sport/sport+.
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      08-20-2014, 01:21 PM   #6
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Quote:
Originally Posted by J Lau View Post
I didn't even know until you ask, maybe because I don't really feel the different on the stiffness after sport/sport+.
I believe it is because there are only 2 settings... comfort and "sport". sport+ just puts the electronics into "DTC" mode instead of full on
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      08-20-2014, 01:26 PM   #7
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Quote:
Originally Posted by nicknaz
Quote:
Originally Posted by J Lau View Post
I didn't even know until you ask, maybe because I don't really feel the different on the stiffness after sport/sport+.
I believe it is because there are only 2 settings... comfort and "sport". sport+ just puts the electronics into "DTC" mode instead of full on
But I would think that with the Adaptive M Suspension the dampers would also change when you change from normal to sport/sport+. I definitely feel the steering stiffening as well as the throttle and and the exhaust note but not so much of the damping.

Let me try again this week, and see if I can tell the different.
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      08-20-2014, 03:01 PM   #8
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Looks goods! Thanks for posting OP
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      08-20-2014, 08:35 PM   #9
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Looks goods! Thanks for posting OP
Just hope this helps =)
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      08-20-2014, 08:44 PM   #10
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Quote:
Originally Posted by J Lau View Post
But I would think that with the Adaptive M Suspension the dampers would also change when you change from normal to sport/sport+. I definitely feel the steering stiffening as well as the throttle and and the exhaust note but not so much of the damping.

Let me try again this week, and see if I can tell the different.
Try going over the same speed bump at the same low speed, and look out for how much the rear dampers compress in comfort setting vs. sport/sport+ setting

I find that to be the most noticeable scenario
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      08-20-2014, 09:41 PM   #11
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Quote:
Originally Posted by nicknaz View Post
Try going over the same speed bump at the same low speed, and look out for how much the rear dampers compress in comfort setting vs. sport/sport+ setting

I find that to be the most noticeable scenario
Thanks for the suggestion. I will definitely try it out this week!!!
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      08-22-2014, 03:03 AM   #12
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On my Euro spec 35is I definitely can feel the dampers get more firm going from Sport to Sport+. Increase in cabin rattles and vibrations tells me that alone! Just tested it. Steering response is tighter and so is throttle input. I can't tell any difference in exhaust note though.
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      08-22-2014, 07:22 AM   #13
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Quote:
Originally Posted by J Lau View Post
Hi guys,

I have received a few PMs from forum members regarding the H&R Sport Springs.

Here are some figures that may help anyone who is interested in them.

I have 235/35 19 for the front and 265/30 19 for the rear. Don't ask me why the radius' are not 25.48" and 25.26". Maybe my tires are flats or maybe my measurement tape is off, but these are the actual measurements from concrete floor to edges of both fenders.

In terms of ride quality, I think they're just okay. IMO it isn't too different from stock setup. In fact, they're on the soft side, so don't expect handling improvement from these springs. Your Z4 will still roll like a boat.



J LAU
I love the look of the dropped Z.
As my car is not tracked, the current ride of my Non M Adaptive suspension works for me. I drive the car in Sports + most of the time and somehow feel that there is improved handling/stiffer suspension in sport +, but it may all be in my head.

In any case as I plan a drop with H and R springs and I f I can maintain the "SAME" ride and achieve the "look" I will be happy.
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2009 BMW Z4 35i/SMG/DCT/Premium,Cold, Sound PK/Com Acc/Ash/PDC/Wind Deflector/Smoked Reflectors/Red Calipers/Cl Mask/M Series Grill/6000K LED's/De-Badged/M Pedals/CF Mirrors-Engine Cover/Stubby/20% Tint/H8 LED's/LCI Side Markers/Sniper Sprint Spoiler/VMR V710/H&R Sport Springs/KN.
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      08-22-2014, 08:25 AM   #14
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I'll chime in too regarding my setup.

Eibach Springs on M adaptive suspension + front and rear H&R swaybars.

First pic shows my old setup with 19inch 235/35/19 fronts and 255/30/19 rear. Handles ok, could be better with v3. No rubbing. Good setup for both dry and wet. Ride quality a bit compromised.



Second pic is my recent setup with 20inch 245/30/20 fronts and 295/25/20rear. Handles great in the dry, tries to kill me too often in the wet. Could still be a lot better with v3. Rubs for the first couple months lol. Great setup for dry, horrible setup for the wet. Ride quality is highly compromised when tire wears.




After going back to the 19inch setup for a couple months, I've concluded that 19's are a better match for this car. Its just more tossable and fun for spirited driving. the 295s on my 20's just doesn't leave much room for fun. If anything snaps, I'm done, especially in the rain. I should also add that I've never experienced this car with run-flats so no comments on that.
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      08-22-2014, 10:39 AM   #15
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Quote:
Originally Posted by BMWZ4RIDER View Post
I love the look of the dropped Z.
As my car is not tracked, the current ride of my Non M Adaptive suspension works for me. I drive the car in Sports + most of the time and somehow feel that there is improved handling/stiffer suspension in sport +, but it may all be in my head.

In any case as I plan a drop with H and R springs and I f I can maintain the "SAME" ride and achieve the "look" I will be happy.
You should hurry up and drop the car! I'm dying to see a dropped E89 Z4 with 18" VMR v710s.
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      08-22-2014, 11:57 AM   #16
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Quote:
Originally Posted by Gunzaro View Post
On my Euro spec 35is I definitely can feel the dampers get more firm going from Sport to Sport+.
Check out this technical doc for our E89 that has been floating around the forums, bottom of page 34 it documents there are 2 curves used by the suspension (comfort and sport)

http://e89.zpost.com/forums/attachme...9&d=1314894807

Another interesting page is 44, which shows the difference between sport and sport+ setting (key difference is DSC ON vs. DTC mode)
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      08-22-2014, 11:58 AM   #17
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Quote:
Originally Posted by BMWZ4RIDER View Post
the current ride of my Non M Adaptive suspension works for me. I drive the car in Sports + most of the time and somehow feel that there is improved handling/stiffer suspension in sport +, but it may all be in my head.
definitely is, there is 1 fixed curve used by that suspension
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      08-22-2014, 12:32 PM   #18
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Quote:
Originally Posted by nicknaz View Post
definitely is, there is 1 fixed curve used by that suspension
Actually there are two suspension settings - one with the roof up, and one with it down (less body roll, less understeer etc)

Last edited by Asbjorn; 08-22-2014 at 01:04 PM..
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      08-22-2014, 01:01 PM   #19
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Quote:
Originally Posted by nicknaz View Post
Check out this technical doc for our E89 that has been floating around the forums, bottom of page 34 it documents there are 2 curves used by the suspension (comfort and sport)

http://e89.zpost.com/forums/attachme...9&d=1314894807

Another interesting page is 44, which shows the difference between sport and sport+ setting (key difference is DSC ON vs. DTC mode)
To me the key difference is the steering. Not sure how it feels in cars with adaptive suspensions (or in the 35is), but in mine, I do not like the steering feel in sport. I love how it feels in sport+ and with DSC=off though. Normal is fine for parking and when cruising with one hand, very comfortable, while sports steering is just a heavier version of normal. Pretty pointless if you ask me.

Anyway, this difference in feel may fool some into thinking that the suspension is also changing modes between sport and sport+. Or perhaps people just "accidentally" happen to drive harder in sport+, causing the suspension to adapt to a stiffer setting within the same mode (I assume this is what continuously adaptive dampers do).
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      08-23-2014, 06:24 AM   #20
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NKC what brake calipers do you have in the front?? Looks great.
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      08-23-2014, 07:46 AM   #21
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Quote:
Originally Posted by Gunzaro View Post
NKC what brake calipers do you have in the front?? Looks great.
Brembo 6 pot BBK. Previous owner had it installed. No idea how or where he got it.
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      08-23-2014, 08:29 AM   #22
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Quote:
Originally Posted by nicknaz View Post
Check out this technical doc for our E89 that has been floating around the forums, bottom of page 34 it documents there are 2 curves used by the suspension (comfort and sport)

http://e89.zpost.com/forums/attachme...9&d=1314894807

Another interesting page is 44, which shows the difference between sport and sport+ setting (key difference is DSC ON vs. DTC mode)
I believe Sport to Sport+ also changes the shift mapping for DCT cars. Mine doesn't seem to use 7th gear in Sport+ (a huge bummer).
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