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2010 2011 BMW 5 Series Forum F10 F10 Technical Topics Wheels / Tires / Suspension / Brakes To all mods gurus and suspension gurus: ACS Springs or KW coilover?
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      08-31-2012, 12:38 AM   #23
jftoha
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Quote:
Originally Posted by lmaleke View Post
Thanks Jose.. Perfect drop! 1" is enough for me. I wonder why are some experiencing noises whereas others are not... Where did u got them installed at?
A local member who does this in his spare time did the work. Well, to be fair to myself, we did it together. It is not not as easy as other cars I have changed the suspension on, but it is doable if you are mechanically inclined.
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      08-31-2012, 05:58 PM   #24
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Originally Posted by jftoha View Post
The springs have been on the car for 13 days and the car has dropped between 3/4" and 1". In my view it is enough to substantially improve the appearance and more importantly, the handling. However, it does not look slammed. I can still remember the days when the Sport Packaged BMW models all looked like my car looks today. My E34 and E39 Sport package models looked similar in height. For some reason BMW designed the F10 to sit very high and even the M5 looks a little lifted to me.

I hope this helps.
+1

ACS is great and my dhp still works fine. MUCH better handling and even looks.
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      09-02-2012, 02:32 AM   #25
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Quote:
Originally Posted by jftoha View Post
I measured today and the drop is exactly 1". Below is a photo of the car taken today.
I hope that helps.
Is this 1" drop from M-Sport suspension or standard?
I dont have M-Sport on mine so I wonder how much it wil be lowered. It is higher front than rear which looks really stupid, but thats all F11 touring cars.
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      09-02-2012, 11:40 PM   #26
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Quote:
Originally Posted by kave View Post
Is this 1" drop from M-Sport suspension or standard?
I dont have M-Sport on mine so I wonder how much it wil be lowered. It is higher front than rear which looks really stupid, but thats all F11 touring cars.
I don't have the M Sport, but I have the Sport package. I don't believe there is any difference in height with those packages though.
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      09-04-2012, 01:17 AM   #27
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Quote:
Originally Posted by lmaleke View Post
Thanks SriRamJaiRam! I almost overlooked on the noise issue and from what I gathered a huge percentage F10 with ACS are experiencing this popping noise.. Now that you are on KW v2, was the noise return or completely gone?
Completely gone. I believe this was an ACS issue...
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      09-04-2012, 01:18 AM   #28
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      09-04-2012, 11:04 AM   #29
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Originally Posted by SriRamJaiRam View Post
Completely gone. I believe this was an ACS issue...
Thanks sri!
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      09-04-2012, 11:10 AM   #30
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Now I just have to find out which shop here in Jakarta does a corner balance..
One shop in West Jakarta area claimed that they are one of the experts in wheel alignment business here. I'll call them up tomorrow to find out...
Seems authorized coilover dealers here just do sales and marketing (and basic installation) and doen't bother to do a corner balance...
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      09-04-2012, 07:24 PM   #31
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I wonder if someone could chime in on the V1, V2 might be overkill for me if I don't plan on adjusting it at all.
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      09-04-2012, 07:40 PM   #32
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Quote:
Originally Posted by lmaleke View Post
I see your f10 550i has the msport suspension (sport package), any bouncy observed during spirited driving?
No bouncy... It is solid and tight!!!
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      09-04-2012, 08:27 PM   #33
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Interesting post... After installing the ACS, we noticed a wierd sound coming from the dash-back engine area. Would notice at slow speeds,hitting bumps or uneven road.. Took it back to shop and had them retighten and check everything.. Noise still there, looked at every option for the noise and never found anything??? Does the noise you all are hearing sound similar to this?? I have actually just tried to ignore it since, but this noise issue makes me curious...
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      09-05-2012, 04:51 AM   #34
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Quote:
Originally Posted by shehatezme View Post
I wonder if someone could chime in on the V1, V2 might be overkill for me if I don't plan on adjusting it at all.
from my understanding after a few days of combing google, seems that for daily driving the v1 is sufficient given u drop your car to kw's recommended height. but if you want more comfort than the street comfort is the way to go. basically kw street comfort is a v2 with softer spring rates and linear springs (v1/v2/v3 are all progressives).

any track junky please correct me if im wrong: progressive springs are better suited for track use while linears are better suited for daily street driving
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      09-05-2012, 04:52 AM   #35
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Quote:
Originally Posted by DentalBoy View Post
Interesting post... After installing the ACS, we noticed a wierd sound coming from the dash-back engine area. Would notice at slow speeds,hitting bumps or uneven road.. Took it back to shop and had them retighten and check everything.. Noise still there, looked at every option for the noise and never found anything??? Does the noise you all are hearing sound similar to this?? I have actually just tried to ignore it since, but this noise issue makes me curious...
im curious about this too.. perhaps end links as what alan been suspecting
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      02-01-2015, 01:17 AM   #36
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Speaking of lowering: What's the status on warranty? Would it get void?
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      02-01-2015, 10:03 AM   #37
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I know that the ACS spring noise was issue on some of their earlier production springs that turned out to be the coils rubbing against themselves - ACS's cure was to put a sleeve on the spring, similar to a hose. But that issue has been corrected in the later production springs. I've been running my ACS springs on my car for over 2 years and haven't had any suspension issues at all. But then again I had my springs installed at a shop that does this type of work on European cars - maybe they know a few tips and tricks that they learned after the first few?
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      12-16-2016, 05:56 PM   #38
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Reviving an old thread because I have a 14' 535 with base suspension, and the age old question is what is out there that does not produce noise, offers comfort, and just calms down the body lean in turns, bounce, dive, squat - just tighten it up while keeping the comfort.

Had the Dinan BMW dealer advise to only go Springs, stick with OEM dampers, stick with Dinan over KW because you won't get noise.

But then a lot of members have gone with ACS, which apparently no longer has noise issues, at least for the last 4 years.

Any updates?

Thanks!

Last edited by Desmond79; 12-17-2016 at 01:41 AM..
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      12-17-2016, 11:21 AM   #39
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I have acs springs on my 2014 550i, I just had them installed in May 2016.

I haven't had any noise issues on mine, so it looks like this has been resolved.

I love the ride quality, (very slightly firmer than stock) however, it has eliminated the floatiness and dive/squat of the OEM springs.

and the 1" drop is perfect for me.

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      12-18-2016, 04:10 PM   #40
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^^^^

Thank you.
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      12-18-2016, 11:07 PM   #41
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Quote:
Originally Posted by DesmondF10
Reviving an old thread because I have a 14' 535 with base suspension, and the age old question is what is out there that does not produce noise, offers comfort, and just calms down the body lean in turns, bounce, dive, squat - just tighten it up while keeping the comfort.

Had the Dinan BMW dealer advise to only go Springs, stick with OEM dampers, stick with Dinan over KW because you won't get noise.

But then a lot of members have gone with ACS, which apparently no longer has noise issues, at least for the last 4 years.

Any updates?

Thanks!
interesting. I'm getting KW V2s installed on Tuesday and I haven't read any complaints about noise.
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      12-19-2016, 12:48 AM   #42
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Quote:
Originally Posted by ThaiBruin View Post
interesting. I'm getting KW V2s installed on Tuesday and I haven't read any complaints about noise.
Over the last week, I've read almost every thread about coilovers and KW's - you will read comments about noise over bumps, etc. I did not notice the comments until the BMW dealer mentioned it and went back over the same threads.

Good luck.
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      12-19-2016, 01:05 AM   #43
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Quote:
Originally Posted by DesmondF10
Quote:
Originally Posted by ThaiBruin View Post
interesting. I'm getting KW V2s installed on Tuesday and I haven't read any complaints about noise.
Over the last week, I've read almost every thread about coilovers and KW's - you will read comments about noise over bumps, etc. I did not notice the comments until the BMW dealer mentioned it and went back over the same threads.

Good luck.
you've seen threads specifically for the KW V2s for the F10? I do see posts on other car forums, but haven't seen any specific to our application.
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      12-19-2016, 10:30 AM   #44
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Quote:
Originally Posted by ThaiBruin View Post
you've seen threads specifically for the KW V2s for the F10? I do see posts on other car forums, but haven't seen any specific to our application.
Good point. Thought I saw a few pointed to the 5 Series. But the BMW Rep is in charge of their high performance division, and said the F10's he'd seen had noise issues with coilovers. Perhaps he was selling me, pointing me to what they offered. You hope people are straight with you...

And another point - was it the coilover or the install?

Don't know. Would like others to chime in...

As to me, before my consult tomorrow with an installer, my thoughts are ACS Springs, Koni Sports, 550 Rear Sway Bar ... and someday, maybe they'll make decent RFT...
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