Eibach 30mm lowering springs

D

Devon Eleven

Member
Thinking of buying these spring to drop my z4 a bit. Anyone got first hand experience of fitting these and is 30mm too low or still practical ? Easy to do at home or really need specialist tools
 
I have them on mine. Fitted the rears myself. Fronts I got my dads mate to put the new springs on as we couldn't compress them with our compressors, so he did it on a machine.

Decent ride quality, not too low for daily driving and handles well.

 
Should be fine. We have a lot of bumpy rural roads here and i've had no issues thus far. I even have to drive over huge speedbumps and train tracks on my work estate and again, no issue's.

I had fk springs on before these which were way too low and the car kept bottoming out, so I removed them in favour of the eibachs.
 
So you want from the M sport suspension to Eibach and found it was much better? Can you explain how so? I'm on M sport suspension as well, and while the ride height is just barely too tall for me, I don't want to go to something lower and sacrifice any more of the ride quality/handling.
 
igeak691 said:
So you want from the M sport suspension to Eibach and found it was much better? Can you explain how so? I'm on M sport suspension as well, and while the ride height is just barely too tall for me, I don't want to go to something lower and sacrifice any more of the ride quality/handling.
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a lot smoother ride i wasnt crashing from bump to bump and having to fight the steering, am very impressed with them plus M sport rears always snap!
 
I'm thinking about getting front and rear sway bars first before springs. But now you've got me wondering which I should do first.
 
igeak691 said:
I'm thinking about getting front and rear sway bars first before springs. But now you've got me wondering which I should do first.
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What do you hope to gain by swapping the ARBs?
 
Fitted Eibachs to the E89 M Sport, suspension hasn't altered much at all (10mm-15mm max), on bumpy roads the Eibachs are harder and more uncomfortable. On smooth roads they are better than the M Sport setup, worth the £120 cost to replace all 4 springs though over OEM
 
Scooba_Steve said:
igeak691 said:
I'm thinking about getting front and rear sway bars first before springs. But now you've got me wondering which I should do first.
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What do you hope to gain by swapping the ARBs?
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Less body roll in the turns. I feel like the car's roll is much more than you'd expect from such a low car.
 
iowsniper said:
Fitted Eibachs to the E89 M Sport, suspension hasn't altered much at all (10mm-15mm max), on bumpy roads the Eibachs are harder and more uncomfortable. On smooth roads they are better than the M Sport setup, worth the £120 cost to replace all 4 springs though over OEM
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So is the idea that on nicely paved curved roads, the car handles better, but for the bad terrain, the ride is worse? That would steer me away from fitting eibachs. I think personally a softer suspension with thicker ARBs would be the best because I want to be able to tackle turns, yet not be beaten up in straight line comfort. Am I on the right track?
 
igeak691 said:
Scooba_Steve said:
igeak691 said:
I'm thinking about getting front and rear sway bars first before springs. But now you've got me wondering which I should do first.
Click to expand...

What do you hope to gain by swapping the ARBs?
Click to expand...

Less body roll in the turns. I feel like the car's roll is much more than you'd expect from such a low car.
Click to expand...

What springs do you currently have? The M-sport ARB is 1mm thicker than standard. I think you can fit an M3 ARB to the front but not to the back as it won't fit. H&R do a set and a search might yield reviews?

As for effectiveness of springs vs. ARBs there are more knowledgeable folk on here than I to answer where best to put your money first.
 
igeak691 said:
iowsniper said:
Fitted Eibachs to the E89 M Sport, suspension hasn't altered much at all (10mm-15mm max), on bumpy roads the Eibachs are harder and more uncomfortable. On smooth roads they are better than the M Sport setup, worth the £120 cost to replace all 4 springs though over OEM
Click to expand...
So is the idea that on nicely paved curved roads, the car handles better, but for the bad terrain, the ride is worse? That would steer me away from fitting eibachs. I think personally a softer suspension with thicker ARBs would be the best because I want to be able to tackle turns, yet not be beaten up in straight line comfort. Am I on the right track?
Click to expand...

Yeah on resurfaced roads/track the Eibachs out perform the standard springs easily but on uneven roads with potholes, raised iron works etc the ride is harsh. I've fitted Eibachs to my last 5 cars and think they are a great spring over standard.
 
What you need are some polybushes for the arb's and decent droplinks.

I've just finished mine off, done the front ARB bushes (powerflex) and droplinks (meyle hd) last month and got the rear ARB bushes (superpro) and stabilizer bars (meyle) on today.

Body roll has been reduced dramatically. The car feels nice and tight, like it would"ve done when new.
 
If I'm gonna be down there I'm going to replace the bushes as well. But I certainly see advantages to doing ARBs instead of springs. Living in new york, I need something more compliant. I had eibachs on my first car, a 96 camry, but that was matched to tokico shocks. i remember i also did a strut bar and RSB. i liked the results from the sb and rsb a lot more than the whole shock and spring combo.
 
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