All these ACS threads...

XAlp · 06-20-2017, 01:59 PM

Well I'm contemplating ACS springs (for about the hundredth time)

Got this message from Deutsche Tech MK. Does this fit with what others have done there?

"An alignment is not included in the price, a geometry is separate (+£80) only a handful of customers decide to have this geometry done additionally."

I'm not trying to check up on them, rather want to double check with you experts what should be done?

Cheers

Rbrown · 06-20-2017, 02:12 PM

Find it hard to believe why people wouldn't get it done?

Agree that there are slot of ACS threads....Lorcan will be buying another yacht!!!!

Darth Helmut · 06-20-2017, 03:03 PM

I think it is strongly advisable to get an alignment done after a few weeks or so once its all settled. Suspension has obviously been tinkered with and its money well spent.

Watsey · 06-20-2017, 03:11 PM

Apologies to Lorcan in advance on this reply, but, the longer I have the ACS springs (and OEM adaptive dampers) on my F31 330sD the more I realise that the rear springs are too soft. They are much better than stock (handling and ride height) but IMHO they aren't optimal : still too much wallow with dampers in Comfort mode. Fronts are fine.

I'd seriously recommend going with a kit that has a higher rear spring rate. The challenge is that most of the suspension manufacturers/suppliers don't (won't) tell you what the spring rates are, and some use the same springs (or coilovers) across saloon and Touring.

As a relatively cheap mod, they're OK, but if you are looking for significant handling improvements I'd go straight to decent coilovers (ACS RS; Bilstein PSS10; etc). If I had my time again I wouldn't spend twice.

devil84 · 06-20-2017, 03:15 PM

on the m135 , babybmw forum, the spring rate on the ACS was exactly the same as Eibach (or vice versa)... It was published on a TUV Certificate...

dopper99 · 06-20-2017, 03:23 PM

Quote:

Originally Posted by XAlp

Well I'm contemplating ACS springs (for about the hundredth time)

Got this message from Deutsche Tech MK. Does this fit with what others have done there?

"An alignment is not included in the price, a geometry is separate (+£80) only a handful of customers decide to have this geometry done additionally."

I'm not trying to check up on them, rather want to double check with you experts what should be done?

Cheers

Do you not read this thread? http://f30.bimmerpost.com/forums/sho....php?t=1394016

XAlp · 06-20-2017, 04:41 PM

Quote:

Originally Posted by dopper99

Do you not read this thread? http://f30.bimmerpost.com/forums/sho....php?t=1394016

Thanks - one of so many!

So seems I should check the wheel alignment after a little while. I'm still a little puzzled by their info - is that the same as "geometry" do you reckon for £80? I suppose it's the headlights I'd previously read that Deutsche Tech include in the fitting?

Quote:

Originally Posted by Watsey

Apologies to Lorcan in advance on this reply, but, the longer I have the ACS springs (and OEM adaptive dampers) on my F31 330sD the more I realise that the rear springs are too soft. They are much better than stock (handling and ride height) but IMHO they aren't optimal : still too much wallow with dampers in Comfort mode. Fronts are fine.
I'd seriously recommend going with a kit that has a higher rear spring rate. The challenge is that most of the suspension manufacturers/suppliers don't (won't) tell you what the spring rates are, and some use the same springs (or coilovers) across saloon and Touring.
As a relatively cheap mod, they're OK, but if you are looking for significant handling improvements I'd go straight to decent coilovers (ACS RS; Bilstein PSS10; etc). If I had my time again I wouldn't spend twice.

Thanks. Would love to look at this but funds limited and sadly not enough spare time to get organised! Also mine isn't adaptive - does that make any difference to your suggestion? Cheers

Watsey · 06-20-2017, 04:54 PM

Quote:

Originally Posted by XAlp

Thanks - one of so many!

So seems I should check the wheel alignment after a little while. I'm still a little puzzled by their info - is that the same as "geometry" do you reckon for £80? I suppose it's the headlights I'd previously read that Deutsche Tech include in the fitting?

Thanks. Would love to look at this but funds limited and sadly not enough spare time to get organised! Also mine isn't adaptive - does that make any difference to your suggestion? Cheers

Difficult to say - at least with adaptive the damping can be increased on the fly if more control is required. I've not driven a passively damped F3X, so can't offer an opinion unfortunately.

CazuaLLUK · 06-21-2017, 02:48 AM

Quote:

Originally Posted by Darth Helmut

I think it is strongly advisable to get an alignment done after a few weeks or so once its all settled. Suspension has obviously been tinkered with and its money well spent.

This, I got mine done 4 weeks after.

Lorcan · 06-21-2017, 03:11 AM

We recommend wheel alignment is checked either at the time of fitting or shortly afterwards. Modern stress-relieved springs don't settle much, so there is no real reason to wait.

We recommend alignment with the change of any suspension component for the same reasons BMW do.

1) Because the car may be out of alignment before the springs are fitted and to get the best from them it's worth making sure everything is spot on

2) Because in fitting the springs you are disturbing the suspension components, even if in theory you are putting them back in the same place. For this reason cars often need small adjustments to get the alignment back where it should be.

Smee · 06-21-2017, 03:28 AM

why would you want a wheel alignment done?? a 20 to 30mm drop isnt enough to affect the geometry enough to knock it out of the green area.

as Lorcan said you would have to be out in the first place so you would have issues even without lowering springs

also as he mentions it would depend on how they are fitted to what is touched. i did mine and didnt touch any of the parts that affect the geometry just unbolts the hard parts lowered it down and then reinstalled and bolted back up.

SW6Steve · 06-21-2017, 04:31 AM

AFAIC wallowing is down to soft damper rates rather than spring. I had eibach springs only at first on my previous car, firmer ride, better in the bends, but wallowed like a b***h! Then fitted eibach pro dampers and the improvement was night and day!
If your not happy with the wallowing in comfort, go to sport on adaptive, that's what it's for!
Also as Lorcan says, your alignment may be out before new springs, and any dismanteled suspension components may not go back exactly the same!
Always get an alignment check to optimise your new kit!

06-20-2017, 01:59 PM	#1
XAlp Major 483 Rep 1,353 Posts Drives: Volvo XC90 T6 Join Date: Jan 2015 Location: Cambridge iTrader: (0)	All these ACS threads... Well I'm contemplating ACS springs (for about the hundredth time) Got this message from Deutsche Tech MK. Does this fit with what others have done there? "An alignment is not included in the price, a geometry is separate (+£80) only a handful of customers decide to have this geometry done additionally." I'm not trying to check up on them, rather want to double check with you experts what should be done? Cheers __________________ Previously: 2007 Alpina D3 Saloon, 2010 Alpina D3 Biturbo Saloon, 2014 335d XDrive M Sport+ Touring. Now: 2018 Volvo XC90 T6 Inscription Pro 2003 Honda S2000
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06-20-2017, 02:12 PM	#2
Rbrown Brigadier General 2766 Rep 4,577 Posts Drives: X3 M40i Join Date: Jun 2015 Location: Glasgow iTrader: (0)	Find it hard to believe why people wouldn't get it done? Agree that there are slot of ACS threads....Lorcan will be buying another yacht!!!!
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06-20-2017, 03:03 PM	#3
Darth Helmut Banned 1780 Rep 2,029 Posts Drives: BMW F32 435d XD Join Date: Jan 2017 Location: The Penthouse, Death Star iTrader: (0)	I think it is strongly advisable to get an alignment done after a few weeks or so once its all settled. Suspension has obviously been tinkered with and its money well spent.
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06-20-2017, 03:11 PM	#4
Watsey Major General 6419 Rep 8,500 Posts Drives: F31 330D sDrive M Sport Join Date: Jun 2015 Location: On sabbatical. iTrader: (1)	Apologies to Lorcan in advance on this reply, but, the longer I have the ACS springs (and OEM adaptive dampers) on my F31 330sD the more I realise that the rear springs are too soft. They are much better than stock (handling and ride height) but IMHO they aren't optimal : still too much wallow with dampers in Comfort mode. Fronts are fine. I'd seriously recommend going with a kit that has a higher rear spring rate. The challenge is that most of the suspension manufacturers/suppliers don't (won't) tell you what the spring rates are, and some use the same springs (or coilovers) across saloon and Touring. As a relatively cheap mod, they're OK, but if you are looking for significant handling improvements I'd go straight to decent coilovers (ACS RS; Bilstein PSS10; etc). If I had my time again I wouldn't spend twice. __________________ 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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06-20-2017, 03:15 PM	#5
devil84 Captain 116 Rep 793 Posts Drives: G30 Join Date: Jul 2015 Location: London iTrader: (0)	on the m135 , babybmw forum, the spring rate on the ACS was exactly the same as Eibach (or vice versa)... It was published on a TUV Certificate...
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06-21-2017, 03:11 AM	#10
Lorcan The artist formerly known as AC Schnitzer UK 3609 Rep 4,518 Posts Drives: The Yellow Peril Join Date: Apr 2013 Location: Norfolk UK iTrader: (0)	We recommend wheel alignment is checked either at the time of fitting or shortly afterwards. Modern stress-relieved springs don't settle much, so there is no real reason to wait. We recommend alignment with the change of any suspension component for the same reasons BMW do. 1) Because the car may be out of alignment before the springs are fitted and to get the best from them it's worth making sure everything is spot on 2) Because in fitting the springs you are disturbing the suspension components, even if in theory you are putting them back in the same place. For this reason cars often need small adjustments to get the alignment back where it should be.
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06-21-2017, 03:28 AM	#11
Smee Colonel 505 Rep 2,152 Posts Drives: BMW M4 F83 Join Date: Aug 2016 Location: Norfolk iTrader: (0)	why would you want a wheel alignment done?? a 20 to 30mm drop isnt enough to affect the geometry enough to knock it out of the green area. as Lorcan said you would have to be out in the first place so you would have issues even without lowering springs also as he mentions it would depend on how they are fitted to what is touched. i did mine and didnt touch any of the parts that affect the geometry just unbolts the hard parts lowered it down and then reinstalled and bolted back up. __________________ Current: BMW M4 F83 - Mods : Pedal Covers, LCI Stereo facia Retrofit and Carbon Rear corner covers Old: F32 435d M Sport - Mods : HR Sport Springs, 20" Veemann V-FS23 in Gun Metal, M Performance Body Kit, Pedal Covers, Eurspec CF Mirror Caps, More-BHP remap 364 BHP 741 NM, M4 Under Chassis Brace, 15mm Rear ARB, 8.8" Screen Retrofit and LCI Stereo facia Retrofit
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06-21-2017, 04:31 AM	#12
SW6Steve Lieutenant 94 Rep 431 Posts Drives: F30 330d Join Date: Dec 2016 Location: Southeast iTrader: (0)	AFAIC wallowing is down to soft damper rates rather than spring. I had eibach springs only at first on my previous car, firmer ride, better in the bends, but wallowed like a b***h! Then fitted eibach pro dampers and the improvement was night and day! If your not happy with the wallowing in comfort, go to sport on adaptive, that's what it's for! Also as Lorcan says, your alignment may be out before new springs, and any dismanteled suspension components may not go back exactly the same! Always get an alignment check to optimise your new kit!
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