Eiback pro springs being installed (35iS + EDC)

Looks great Stuart :thumbsup: thought about doing mine,had them on my e86 & made a noticeable improvement. Let us know what you think if the handling is improved.
 
How much difference did non run flats make Stuart while the car was still stock?

I don't mind them so much on the E89 compared to the E85, they we're awful on that, but if there's significant difference then I'd change them.
 
In terms of harshness & vibration moving to non-RFT tyres is about the difference between sport & comfort settings.
 
KERMIT1970 said:
Looks great Stuart :thumbsup: thought about doing mine,had them on my e86 & made a noticeable improvement. Let us know what you think if the handling is improved.
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Very noticable improvement
 
john-e89 said:
How much difference did non run flats make Stuart while the car was still stock?

I don't mind them so much on the E89 compared to the E85, they we're awful on that, but if there's significant difference then I'd change them.
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Yes it was very nice change, much less crashy, less tramline, more compliant
 
R.E92 said:
How much did the fitting cost? Very tempted by these!
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Hmm not sure you can get the same rates in the UK, I paid £90 which includes 2 full tracking setups and swapping spacers 3 times. The front springs are so small their compression tool couldn't go down that far so they had to compress them by hand!
 
stuartinzg said:
techathy said:
That looks great but the front will be too low for my plans :cry:
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How come?
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Running 245/35R18 front & 265/35R18 rear tyres that’s an effective 27mm drop at the front then the splitter I’m looking to use drops the front edge of the car a further 12mm. So thats an near 40mm effective drop at the front!
 
Is there less body roll with these new springs?

Might see how viable a DIY is on a spring change. Would have to get a garage to do the tracking after though.
 
R.E92 said:
Is there less body roll with these new springs?

Might see how viable a DIY is on a spring change. Would have to get a garage to do the tracking after though.
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Apparently the rear is easy, spring isn't attached to the strut, takes 15min a side. It's the front that's a pain. Yes less roll. I will also put h&r sway bars once the LSD is on. Waiting for mfactory to release their metal plate 20 piece clutch system LSD in 2-3 months, think I'll go with that.
 
Got some track performance settings for the E89 Z4:
Front (per side)
Camber: -0.9
Castor: -5.3
Toe: +0.07

Rear (per side)
Camber: -1.85
Toe: +0.02*

*gives effective toe-out under power, for road use consider using BMW's minimum toe of +0.05. This will make the car tend to oversteer a little more under power but considerably reduce the car's tendency to wander.
 
techathy said:
Got some track performance settings for the E89 Z4:
Front (per side)
Camber: -0.9
Castor: -5.3
Toe: +0.07

Rear (per side)
Camber: -1.85
Toe: +0.02*

*gives effective toe-out under power, for road use consider using BMW's minimum toe of +0.05. This will make the car tend to oversteer a little more under power but considerably reduce the car's tendency to wander.
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This will require camber adjustment arms on all 4 corners because you cant go below -2 on standard setup and you cant change front at all, but great info thanks, this will help.
 
techathy said:
A top-hat with caster & camber adjustment up front. Camber adjustment rod at the rear.
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Can you point me in the direction of the camber adjustment for front?

I found this for the rear

http://www.schmiedmann.com/en/bmw-z4-e89/1954663-new?product=572110K
 
Found some here but it's quite expensive: http://www.ground-control-store.com/products/description.php/II=974/CA=182

Bit cheaper: https://www.turnermotorsport.com/p-3548-front-adjustable-cambercaster-plates-e36-e39-not-m5-e46-not-m3-e60-e82-not-1m-e9x-not-m3-z3-mz3-z4-kmac-stage-1-street/
 
Just to report I'm taking off the 10mm spacers tomorrow morning, causes rub and started to damage the rear tyres - with the springs and slightly wider wheels it's already wide enough.
 
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