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      08-25-2010, 08:41 PM   #12
Malek@MRF
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Drives: E92 M3, E46 M3, G82 M4
Join Date: Jan 2008
Location: Irvine, California

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Quote:
Originally Posted by kitw View Post
My car with the Eibachs and the E36 M3 bump stops rode pretty well most of the time, but was pretty upset by mid corner bumps. My Dinan Stage 1 does not do that.

Some AutoXers have noted that with the Dinan suspension, the increased travel can cause rubs between the tire and the top of the fender well. In speaking with Steve D, he indicated that shaving the guide support anymore would exacerbate that and felt like they had achieved as much shaving as they wanted. You still won't have as much travel as the Dinan suspension since your car is so much more. (my dinan stage 2 is 2 fingers of wheel gap in the front, barely lower than the stock ZCP)

Also, you didn't increase the travel in the rear at all (which is actually really easy, Dinan sells an EDC kit for $100 that does it, but I bet it's just again, shaved stock bits)

The ZCP uses a different rear spring than the normal cars to attain the lowering in the rear. Interesting about the spring pad, can you post the part number? I'd like to cross reference it. (although my car is low enough in the rear, visually I'd like a touch more in the front)
There is no use in doing anything to the rear to increase travel, as there is plenty of travel in the rear, even if you lower it 1.2 inches. And yes, it can be done by trimming the outer stop. If you would like pictures of how this is done, let me know, as it's a simple procedure that will cost you no money and can do it at home.

The ZCP rear spring measured out to being the same length as a normal M3 spring. The pad is what was much thinner. If there is a difference between the two springs, I was not able to observe it, because I am sure it was minute.

Front end suspension travel. There is a 0.66" increase compared to a non-modified lowered suspension with the same springs. There has been no rubbing on any liner or part of the car what so ever. I actually find this pretty darn impossible to do. Even some of the hardest dips and bumps have not been able to create this condition.

Anyways, I am not trying to cause some sort of argument with anyone here, I am just here to share my findings for the sake of the community. If one feels comfortable spending the money on a Dinan kit, which is something anyone can virtually do, by all means do so. However, not everyone wants eibach or dinan springs and want more out of the car and suspension. The Eibach springs are too soft for the ZCP suspension.
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