///M roadster suspension geometry options

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Cb3749
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///M roadster suspension geometry options

Post by Cb3749 » Wed Jul 12, 2017 3:33 pm

Hi Everyone,
Bilstein B12 suspension kit with Eibach springs is being fitted tomorrow and will need to have the geometry set up afterwards.
Do I set it up as a standard ///M roadster or a CSL as some suggest?
What are the differences and advantages/disadvantages between the two set ups?
///M will be on 18" wheels with Continental Sport Contact M3's - 225/45ZR18 front and 255/40ZR18 rear.
Car is only used on roads not on the track.
Any help/suggestions from those who know would be much appreciated.

Many thanks

Charlie B :)
///M R sapphire black two tone at present soon to be all black, Bilstein B6 + Eibach springs OEM strut brace cruise control OEM stubby Hayward&Scott exhausts
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E61 550i M sport
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Fishy Dave
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///M roadster suspension geometry options

Post by Fishy Dave » Wed Jul 12, 2017 4:49 pm

I would go with the CSL settings. These are still fairly mild settings and whilst you will feel the difference it doesn't transform the car into some sort of animal. Tyre wear remained fairly even for me with CSL settings when using the same tyres as you. Since then I have further increased the negative front camber and rear toe out for track use. :)
Z4M Roadster, Silver Grey, Extended Leather, Nav, Bluetooth, Cruise, Hifi, PDC, Heated Seats, Folding Mirrors.
AP 6/4 pots w.EBC Blue Stuff, Eventuri, Exhaust Cutout, Eibach springs + rear ARB, RTAB Limiters, BMW strut brace + M Track.
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///M roadster suspension geometry options

Post by TomK » Wed Jul 12, 2017 9:55 pm

IMHO the standard geo settings are one of the key reasons the car was much maligned when launched. Moving to something slightly more aggressive to help turn in ala the CSL setup would be no bad thing for the road, it's like they set the chassis up for muppets.
MC IB, CSL intake, Schrick 288/280 cams, SS race bbox, APs, RS-29s, Apex ARC-8, AD08-Rs, Bilstein B12, Turner arms & RTAB limiters, Vibratec mounts, Rogue pulleys & RSMs, Sparco carbon w/ 6 point, CDV delete, UUC ssk, M5 gearknob, oem strut

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///M roadster suspension geometry options

Post by TomK » Wed Jul 12, 2017 10:02 pm

TomK wrote:
Wed Jul 12, 2017 9:55 pm
IMHO the standard geo settings are one of the key reasons the car was much maligned when launched. Moving to something slightly more aggressive to help turn in ala the CSL setup would be no bad thing for the road, it's like they set the chassis up for muppets eta: (avoid lawsuit :D )
MC IB, CSL intake, Schrick 288/280 cams, SS race bbox, APs, RS-29s, Apex ARC-8, AD08-Rs, Bilstein B12, Turner arms & RTAB limiters, Vibratec mounts, Rogue pulleys & RSMs, Sparco carbon w/ 6 point, CDV delete, UUC ssk, M5 gearknob, oem strut

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///M roadster suspension geometry options

Post by VRSteve » Wed Jul 12, 2017 10:09 pm

I have the B12 setup on my car.

I have the CSL geo on my car.

Best thing I ever did.
///M|Silver Grey|Black Leather|BT|Nav|DSP|Heated Seats|PDC|Stubby|Intravee|Gaptech RCH+|
Turner Limiters|Turner Rear Top Mounts|Bilstein B12|Powerflex ARB Bushes|Powerflex Lollipops|
E46 M3 Strutbrace|M-Track

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///M roadster suspension geometry options

Post by RedUn » Thu Jul 13, 2017 10:47 am

CSL geo makes a nice difference, also ditch the continentals when you can...
IMOLA Z4///MR

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///M roadster suspension geometry options

Post by JAD » Thu Jul 13, 2017 11:48 am

VRSteve wrote:
Wed Jul 12, 2017 10:09 pm
I have the B12 setup on my car.

I have the CSL geo on my car.

Best thing I ever did.
Having driven this car, the setup is superb.

As discussed in other threads, Charlie, I think you're making the right decision with the Bilsteins.

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///M roadster suspension geometry options

Post by Viren » Fri Jul 14, 2017 4:19 am

I have b12 kit aswell and it's pretty awesome for the money. Almost zero toe in the front and rear. 1degree 30 camber rear, 1 degree 30 camber front. Works for me and no uneven tyre wear.
07 Z4MC standard spec

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///M roadster suspension geometry options

Post by Mangozac » Fri Jul 14, 2017 6:06 am

Is CSL geometry achievable with the stock suspension?
Current: 06 E85 M Silbergrau
Previous: E85 3.0si Silbergrau, 03 E85 2.5i Maldives Blue.
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RedUn
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///M roadster suspension geometry options

Post by RedUn » Fri Jul 14, 2017 7:06 am

Yeah if you pull the camber pins on the frontv :thumbsup:
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///M roadster suspension geometry options

Post by Mangozac » Fri Jul 14, 2017 10:16 am

That much camber? Does that not chew out tyres a lot quicker?
Current: 06 E85 M Silbergrau
Previous: E85 3.0si Silbergrau, 03 E85 2.5i Maldives Blue.
Mods: Gaptech OTH+R, Dension Gateway 300 with USB, CDV-, clear side indicators, euro tails, stubby, MFSW retrofit, OEM Bluetooth/VR

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RedUn
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///M roadster suspension geometry options

Post by RedUn » Fri Jul 14, 2017 7:06 pm

Perfectly fine
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///M roadster suspension geometry options

Post by Mangozac » Sat Jul 15, 2017 10:42 pm

Am I missing something in reading alignment specifications? According to TIS, E85 M and E46 CSL camber specs are the same, but CSL simply has a wider tolerance:
Z4M: http://workshop-manuals.com/bmw/z_serie ... _roadster/
CSL: http://workshop-manuals.com/bmw/3_serie ... ___m3_csl/
Current: 06 E85 M Silbergrau
Previous: E85 3.0si Silbergrau, 03 E85 2.5i Maldives Blue.
Mods: Gaptech OTH+R, Dension Gateway 300 with USB, CDV-, clear side indicators, euro tails, stubby, MFSW retrofit, OEM Bluetooth/VR

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///M roadster suspension geometry options

Post by VRSteve » Mon Jul 17, 2017 1:31 pm

Mangozac wrote:
Sat Jul 15, 2017 10:42 pm
Am I missing something in reading alignment specifications? According to TIS, E85 M and E46 CSL camber specs are the same, but CSL simply has a wider tolerance:
Z4M: http://workshop-manuals.com/bmw/z_serie ... _roadster/
CSL: http://workshop-manuals.com/bmw/3_serie ... ___m3_csl/
You're right
Camber is the same.

You wont get the caster as the Z uses offset lollipops and the CSL doesn't.
Rest is easily done.
///M|Silver Grey|Black Leather|BT|Nav|DSP|Heated Seats|PDC|Stubby|Intravee|Gaptech RCH+|
Turner Limiters|Turner Rear Top Mounts|Bilstein B12|Powerflex ARB Bushes|Powerflex Lollipops|
E46 M3 Strutbrace|M-Track

Cb3749
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///M roadster suspension geometry options

Post by Cb3749 » Mon Jul 17, 2017 5:22 pm

If that's the case, as you have CSL set up on your car
a) do I need to change the lollipops?
b) do I need to remove the camber pins?

What differences will these changes make to the handling?
///M R sapphire black two tone at present soon to be all black, Bilstein B6 + Eibach springs OEM strut brace cruise control OEM stubby Hayward&Scott exhausts
Previous
E61 550i M sport
E39 M5 x 2
Various 3 and 5 series x 12

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