LaserK04

Car is a daily driver, no track time planned at all. Looking for a way to maintain stock ride comfort, improve dampening, and drop the car maybe 1-1.25" up front, 0.5- 0.75" in the rear. Searched extensively, so far it appears one person has tried this, but little info was revealed.

I've heard Audi changed the perch height on the front shocks at some point, perhaps 2001.5? Did it go up or down? Did the spring length change as a result to maintain the same stock ride height? Curious to see if i could swap springs if they are different lengths.

Is there a limit as to how low you can groove the bilsteins? I've seen this done on A4's successfully but never an S4, and the one post I've seen indicates that you'd have to groove the fronts pretty low, at least an inch below the stock perch height.

I've driven cars with H&R springs and S4 bilsteins. Too low, too bouncy. The car is not driven agressively enough often enough to warrant $1500+ for coilovers.

Anyone have experience with this?

Thanks!

Mark P

Their progressive spring offers a very comfortable ride, but once you start pushing it in the curves, then it stiffens up more. Driving 40k/yr, I was concerned with an aftermarket suspension for driveability day in, day out. APR with notched Bilsteins have worked out great.

I never had the shocks with the stock springs, so I can't say much for that combo.

Check my website link for pics of the notched bilsteins, etc.

<img src="http://ctny.audiworld.com/mark/s4/suspension/dsc03490.jpg"><ul><li><a href="http://ctny.audiworld.com/mark/s4/suspension/">http://ctny.audiworld.com/mark/s4/suspension/</a</li></ul>

LaserK04

I've heard those are rebadged Eibachs? Any idea if that's true?

moTAP

Intrax

Rob O

Could also try to locate a set of Audi's Euro Sport spings.

Rob O

There are a limited number of spring manufacturers, Eibach is one of the biggest. Companies will custom spec spring rates, among other things, then sell them under their own name. MTM's kit is custom wound Eibachs as well.

Don't confuse these with "off-the-shelf" Eibach parts.

Mark P

and as Rob notes, these are not just rebadged - Intrax does not offer this same spring - it was made per APR specs for APR

Mark P

And I'd agree w/Rob on both of those suggestions as well

moTAP

<ul><li><a href="https://forums.audiworld.com/s4/msgs/900643.phtml">https://forums.audiworld.com/s4/msgs/900643.phtml</a</li></ul>

Rob O

I didn't know who made APR's, didn't even know Intrax manufactured their own springs ... mine was more a response to the notion of "rebadged Eibachs" as related to mass-custom spring sets like MTM's.