Re: Koni vs Bilstein Sport, Eibach vs H&R (archive)

I've been in a 635 before and after an Eibach spring install. They ride quality with the Eibachs is very similar to the factory setup, not harsh at all and no "resonance". You will also notice a positive handling improvement. If you want a noticably stiffer suspension then stock I would go with a different spring.

I'm doing some early planning on a SLS elimination project. I've been reading all the possible info regarding shocks/springs, and wanted to get some opinions from folks out there who have gone through this..

Objective: My car is an 88 635, running 16x8 wheels with 225/50 16s in the summer and 15x7 wheels in the winter. I wanted to lower it while finding a good compromise and not making the ride too firm. It's a daily driver and would not be used for track events...

Potential Setup: I'm looking at going with either the Bilstein Sports or Konis, along with either the Eibach or H&R lowering springs.

My impression: So far, it sounds like a lot of folks are using the Bilstein Sports and are happy, but there is a big mystery about the Konis. I haven't tracked down numbers (part#/prices) on these, but sounds like a possible alternative, especially since they can be adjusted while on the car. As far as springs, again it's the Eibachs that most tend to favor, but I did read something about them having an "annoying" resonance, and that the H&R were comperable, but without the resonance...

Does this sound like I'm going down the right path, or is it all going to end up too stiff for what I'm expecting? I like to drive "enthusiastically" (as the bmw manual calls it), but don't want to have some unenjoyable ride if anyone comes along... Should I be looking in more of the direction of the Bav Autosport springs, for instance? If so, would I still want to go with the Bilstein Sports, or is that bringing me back to the same firmness as with the eibachs?

Any clues on where I can get the Bilstein/Eibach stuff cheaper through a non-BMW source? I found some Konis a while back for another car and found them much cheaper once I got out of the enthusiast mail order catalog world :)

Pete

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