Suspension dilemma

Yeatser · 10-07-2015, 07:23 AM

Dilemma : which suspension set up to go for

ACS RS kit or Birds B4x sports suspension kit inc ARB,s???

ACS gets great reviews on this forum but Birds also gets a great write up in BMWCar mag

I,l be driving mostly on twisty bumpy B roads in Scotland and don't want to be riding to low as I've a low front spoiler already fitted which is not great over speed bumps.

What's your thoughts and experience?

Thanks

Kenny

creepy coupe · 10-07-2015, 07:25 AM

Quote:

Originally Posted by Yeatser

I,l be driving mostly on twisty bumpy B roads in Scotland and don't want to be riding to low

ACS then. The birds is a fair bit lower.

creepy coupe · 10-07-2015, 07:26 AM

Expect a drop of 17mm front and 19mm rear with ACS

NISFAN · 10-07-2015, 07:30 AM

Bilstein PSS10

Yeatser · 10-07-2015, 07:42 AM

Quote:

Originally Posted by NISFAN

Bilstein PSS10

Do you have the PSS10,s fitted to your vehicle?

NISFAN · 10-07-2015, 07:42 AM

Quote:

Originally Posted by Yeatser

Do you have the PSS10,s fitted to your vehicle?

Yep, and they are the dogs danglies.....cheap too in comparison.

creepy coupe · 10-07-2015, 07:46 AM

Quote:

Originally Posted by NISFAN

Yep, and they are the dogs danglies.....cheap too in comparison.

Can you get them for the 435d ?

NISFAN · 10-07-2015, 07:55 AM

Quote:

Originally Posted by creepy coupe

Can you get them for the 435d ?

They have a kit for xDrive cars, try looking for part number Bilstein 48-207287

Seems it fits 3 and 4 series alike.

creepy coupe · 10-07-2015, 07:58 AM

Quote:

Originally Posted by NISFAN

They have a kit for xDrive cars, try looking for part number Bilstein 48-207287

Seems it fits 3 and 4 series alike.

Ok. I tried looking for on demon tweeks and they said nothing available

NISFAN · 10-07-2015, 08:01 AM

Quote:

Originally Posted by creepy coupe

Ok. I tried looking for on demon tweeks and they said nothing available

Whatever you do, don't buy them in the UK. Find a German Bilstein dealer and pay considerably less.

xDrive listing

Says for xDrive 335d 48-245463

creepy coupe · 10-07-2015, 08:03 AM

Quote:

Originally Posted by NISFAN

Whatever you do, don't buy them in the UK. Find a German Bilstein dealer and pay considerably less.

xDrive listing

Says for xDrive 335d 48-245463

Bilstein UK don't list any for the 4 series?

NISFAN · 10-07-2015, 08:07 AM

Quote:

Originally Posted by creepy coupe

Bilstein UK don't list any for the 4 series?

To be honest, Bilstein suck at letting people know what they have. Very confusing.

Try this 4 Series xDrive

I might be wrong, but think 3 and 4 series have the same units. i.e. interchangeable between them.

creepy coupe · 10-07-2015, 08:07 AM

Yeatser.... I'm assuming your car isn't fitted with Adaptive?

creepy coupe · 10-07-2015, 08:09 AM

Quote:

Originally Posted by NISFAN

To be honest, Bilstein suck at letting people know what they have. Very confusing.

Try this 4 Series xDrive

I might be wrong, but think 3 and 4 series have the same units. i.e. interchangeable between them.

Yep. they need to let their UK outlet know

Yeatser · 10-07-2015, 08:12 AM

Quote:

Originally Posted by creepy coupe

Yeatser.... I'm assuming your car isn't fitted with Adaptive?

No it's the standard suspension

teaston · 10-07-2015, 09:50 AM

Quote:

Originally Posted by Yeatser

Dilemma : which suspension set up to go for

ACS RS kit or Birds B4x sports suspension kit inc ARB,s???

ACS gets great reviews on this forum but Birds also gets a great write up in BMWCar mag

I,l be driving mostly on twisty bumpy B roads in Scotland and don't want to be riding to low as I've a low front spoiler already fitted which is not great over speed bumps.

What's your thoughts and experience?

Thanks

Kenny

Don't go lower than the ACS spring kit, even on the F30 it's too low and you'll scrape the car a lot. I most likely won't be lowering at all in future.

Watsey · 10-07-2015, 10:24 AM

As its adjustable for bump and rebound, and as you would be moving from a passive setup, I'd seriously consider ACS RS. You can get switchable mode dampers, but the cars that I've driven or ridden in (335xD and M4) were really well tied down.

gtsussex · 10-07-2015, 10:27 AM

Quote:

Originally Posted by teaston

Don't go lower than the ACS spring kit, even on the F30 it's too low and you'll scrape the car a lot. I most likely won't be lowering at all in future.

As (I think) I'm one of the only bods with the RS kit on here, think I can just about pass comment. Depends on whether you go for the splitter or not. Standard front end it's absolutely fine - you'd be unlucky to catch. I scrape every now and then but that's because I put the splitter on and it's the approach angle that causes probs. It is mostly on steep car park ramps (solution drive at angle) and really aggressive speed bumps (can usually get round). Other than that, some of our single track lanes where middle of road is higher than both sides. Sounds far worse than it is.

Wouldn't trade it for anything though as it utterly pi**es on the standard setup.

Can't comment on Birds as never tried it...

creepy coupe · 10-07-2015, 10:33 AM

Ignore my comment re the amount of drop. I didn't read the post correctly and wasn't commenting on the RS kit. Just the road springs.

takumichinoku · 10-07-2015, 10:37 AM

Im already scraping a little in car park ramps and odd speed bump on standard suspension. But I do have the performance splitter..

I've just bought the ACS springs for the 35i and this thread has made me question whether to bother fitting them!

creepy coupe · 10-07-2015, 10:42 AM

Quote:

Originally Posted by takumichinoku

Im already scraping a little in car park ramps and odd speed bump on standard suspension. But I do have the performance splitter..

I've just bought the ACS springs for the 35i and this thread has made me question whether to bother fitting them!

I'm pretty sure the ACS springs will drop yours 10mm if it's a M sport.

takumichinoku · 10-07-2015, 11:02 AM

Quote:

Originally Posted by creepy coupe

I'm pretty sure the ACS springs will drop yours 10mm if it's a M sport.

Yeah 10mm that's right. Not sure how noticeable that will be but I'm just worried about spending £300 for fitting and then it hitting every ramp and bump and having to take it off again

Think il get away with it?

OP has quite a low splitter I see.

10-07-2015, 07:23 AM	#1
Yeatser Second Lieutenant 102 Rep 228 Posts Drives: 435d xdrive Join Date: Aug 2015 Location: Scotland iTrader: (0)	Suspension dilemma Dilemma : which suspension set up to go for ACS RS kit or Birds B4x sports suspension kit inc ARB,s??? ACS gets great reviews on this forum but Birds also gets a great write up in BMWCar mag I,l be driving mostly on twisty bumpy B roads in Scotland and don't want to be riding to low as I've a low front spoiler already fitted which is not great over speed bumps. What's your thoughts and experience? Thanks Kenny
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10-07-2015, 07:26 AM	#3
creepy coupe Lieutenant General 1867 Rep 13,043 Posts Drives: BMW M340I G20 Join Date: Aug 2007 Location: UK iTrader: (2) Garage List 2015 BMW 435d [0.00] 2009 335i [0.00]	Expect a drop of 17mm front and 19mm rear with ACS __________________ -------------------------------------------------------------- Current car.M240i. Previous.MINI JCW. E92 325i. 435d M235i.M135i. 635d Coupe, E92 M3 manual, E92 M3 DCT Competition Pack. E92 335i, Porsche Cayman S Gen2, 135i Coupe. E92 320d, MK5 R32. MK5 Golf GTi,MK5 Golf GT-TDI,E46 318Ci.
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10-07-2015, 07:30 AM	#4
NISFAN Major General 3489 Rep 9,709 Posts Drives: BMW M2 Join Date: Aug 2012 Location: Bedford UK iTrader: (0)	Bilstein PSS10
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10-07-2015, 08:07 AM	#13
creepy coupe Lieutenant General 1867 Rep 13,043 Posts Drives: BMW M340I G20 Join Date: Aug 2007 Location: UK iTrader: (2) Garage List 2015 BMW 435d [0.00] 2009 335i [0.00]	Yeatser.... I'm assuming your car isn't fitted with Adaptive? __________________ -------------------------------------------------------------- Current car.M240i. Previous.MINI JCW. E92 325i. 435d M235i.M135i. 635d Coupe, E92 M3 manual, E92 M3 DCT Competition Pack. E92 335i, Porsche Cayman S Gen2, 135i Coupe. E92 320d, MK5 R32. MK5 Golf GTi,MK5 Golf GT-TDI,E46 318Ci.
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10-07-2015, 10:24 AM	#17
Watsey Major General 6429 Rep 8,502 Posts Drives: F31 330D sDrive M Sport Join Date: Jun 2015 Location: On sabbatical. iTrader: (1)	As its adjustable for bump and rebound, and as you would be moving from a passive setup, I'd seriously consider ACS RS. You can get switchable mode dampers, but the cars that I've driven or ridden in (335xD and M4) were really well tied down. __________________ 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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10-07-2015, 10:33 AM	#19
creepy coupe Lieutenant General 1867 Rep 13,043 Posts Drives: BMW M340I G20 Join Date: Aug 2007 Location: UK iTrader: (2) Garage List 2015 BMW 435d [0.00] 2009 335i [0.00]	Ignore my comment re the amount of drop. I didn't read the post correctly and wasn't commenting on the RS kit. Just the road springs. __________________ -------------------------------------------------------------- Current car.M240i. Previous.MINI JCW. E92 325i. 435d M235i.M135i. 635d Coupe, E92 M3 manual, E92 M3 DCT Competition Pack. E92 335i, Porsche Cayman S Gen2, 135i Coupe. E92 320d, MK5 R32. MK5 Golf GTi,MK5 Golf GT-TDI,E46 318Ci.
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10-07-2015, 10:37 AM	#20
takumichinoku First Lieutenant 83 Rep 387 Posts Drives: F80 M3 Join Date: Feb 2012 Location: UK iTrader: (1)	Im already scraping a little in car park ramps and odd speed bump on standard suspension. But I do have the performance splitter.. I've just bought the ACS springs for the 35i and this thread has made me question whether to bother fitting them!
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