E92 M3 ZCP Lowering Springs. WRITE UP INSIDE

[marconi118]

Have to see shipping costs from Europe to australia

[tdott]

Has anyone done this to a non-zcp edc car?

Wondering if the results will be the same or if ZCP do infact have shorter struts.

[kenkamm]

Anyone have a non-ZCP measurement to compare to?

[joker_20_02]

I plan on doing it with a non ZCP soon. Got my springs waiting on my bump stops to come in.

[6ixSpd]

Does anyone know the part number for the 1996 E36 M3 front bump stop?

[attbimmer]

Originally Posted by the6M3

Does anyone know the part number for the 1996 E36 M3 front bump stop?

31-33-2-225-377 via realoem. Number 10 at the below link.

http://www.realoem.com/bmw/enUS/show...diagId=31_1250

[6ixSpd]

Originally Posted by attbimmer

31-33-2-225-377 via realoem. Number 10 at the below link.

http://www.realoem.com/bmw/enUS/show...diagId=31_1250

Thank you!

[6ixSpd]

Just want to give a shout out to the OP for sharing this info with the forums. I did the install yesterday with the modified strut mounts and bump stops. I'm really surprised at how well the car rides! I've never been a fan of lowering springs on any of the BMWs I've owned (as per the reasons in first post) but this seemingly works so far.

I went for a test run on some nasty bumpy an pothole ridden roads and it only bottomed out on one occasions, where I bet even a stock car would have. The car definitely rides a bit stiffer, even more pronounced in Sport Plus EDC mode which is a nice bonus. I felt the stock Sport Plus EDC didn't offer that much differentiation.

[Fooksdaddy]

So I have EDC on 08 E90 currently has B&G springs (previous owner installed) and the ride is crap or not to my liking. After reading this I'd need to do the following:

1. install e36 M3 coupe bumpstops (Front/Rear)
2. shave down the front guide support (underside of strut mount)
3. remove the rear spring pad

and she should ride better?

[6ixSpd]

Originally Posted by Fooksdaddy

So I have EDC on 08 E90 currently has B&G springs (previous owner installed) and the ride is crap or not to my liking. After reading this I'd need to do the following:

1. install e36 M3 coupe bumpstops (Front/Rear)
2. shave down the front guide support (underside of strut mount)
3. remove the rear spring pad

and she should ride better?

Yes, the problem is you don't have enough suspension travel and are riding the bump stops. With the modifications above, it'll be a night and day difference.

I followed MRF's tutorial and my car rides absolutely amazing. No bottoming out, not hard crashing over bumps. Just glued to the road.

[Fooksdaddy]

Originally Posted by 6ixSpd

Yes, the problem is you don't have enough suspension travel and are riding the bump stops. With the modifications above, it'll be a night and day difference.

I followed MRF's tutorial and my car rides absolutely amazing. No bottoming out, not hard crashing over bumps. Just glued to the road.

Do you have a part number for your bumpstops I can get?

[solle]

Is the suspension the same on the e90 and e92? Im thinking on doing this to my e90 lci EDC. Is it the same routine for the e90?

What does the trimmed front guide supports aid in?

[pbonsalb]

The upper strut bearing sits on top of the strut shaft. The shaft is machined for it to sit there. If you reduce the leg of the upper strut bearing, you increase the range of travel of the strut shaft. If you have 2 inches of suspension travel and run springs that are 1 inch shorter, you have 1 inch of travel. Take 1/4 off the upper strut bearing and use bump stops that compress 1/4 inch more, and you just gained back half the travel you lost, which is travel you need if you drive on anything other than smooth roads. Its the transitions, bumps, dips, potholes, etc. of the real world that cause the suspension to crash and bang as it bottoms out.

[solle]

Originally Posted by pbonsalb

The upper strut bearing sits on top of the strut shaft. The shaft is machined for it to sit there. If you reduce the leg of the upper strut bearing, you increase the range of travel of the strut shaft. If you have 2 inches of suspension travel and run springs that are 1 inch shorter, you have 1 inch of travel. Take 1/4 off the upper strut bearing and use bump stops that compress 1/4 inch more, and you just gained back half the travel you lost, which is travel you need if you drive on anything other than smooth roads. Its the transitions, bumps, dips, potholes, etc. of the real world that cause the suspension to crash and bang as it bottoms out.

ok, thanks for the clarifiaction

If I dont want to modifiy the oem part is this part another way to go at it?
http://www.ebay.com/itm/2x-reinforce...tXGODL&vxp=mtr

[bosspower]

This also works for E93 M3 with Eibach Pro ?

[bosspower]

Anybody ?

[N54sk8r]

So far I have the springs, I've ordered the bump stops but where did you find the rubber tube that wraps around the lower spring coil . Is that something a Home Depot carries or am I searching an automotive store ?

[atopa2002]

This

Originally Posted by N54sk8r

So far I have the springs, I've ordered the bump stops but where did you find the rubber tube that wraps around the lower spring coil . Is that something a Home Depot carries or am I searching an automotive store ?

[ivan.m3]

I had this done on my non ZCP/non edc M3, and all I can say is WOW. It made a huge difference, the ride quality feels the same if not better than with the stock springs. And the car sits evenly on the front and back.

[Powashiftin]

Originally Posted by ivan.m3

I had this done on my non ZCP/non edc M3, and all I can say is WOW. It made a huge difference, the ride quality feels the same if not better than with the stock springs. And the car sits evenly on the front and back.

Looks great. What springs did you use?

[ivan.m3]

Originally Posted by Powashiftin

Looks great. What springs did you use?

I used H&R Springs

[OwnAge]

Very interesting thread. Read it all.
Yeah wish I saw the carfrom the op.