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In Reply to: Re: According to Eibach, I don't need to change sh posted by J.C.Baranda on January 14, 2002 at 08:48:00:
In short stock shocks should be ok, however you may like more damping than the standard set up (Old shocks are guaranteed to be a little 'softer' than new anyway). I have revised springs and adjustable dampers (rebound not bump) and can comment on the feel over an over damped vs underdamped car.
Over damped feels tight and taught but hard as if the springs are too stiff and can have a tendency to 'crash' a little over bumps. If you go over speed bumps you can feel the pause as the shocks stop the spring coming back down after compression.
Underdamped feels wooly and soft and much less taught, has a horrible tendency to feel wayward and 'floaty' and you can notice the car get moved around more than you would like or expect on big humps at speed. The suspension feels 'old'.
BMW set a compromise that you may not of chosen yourself, it's horses for courses. I personally like more damping than some. For a track car the damping rate is usually higher than for the road.
Incidentally the eibach springs were not designed for the M3 but the standard E30 and this is probably why they end up being similar to standard but a little lower
A shock designed to handle 6 inches of wheel travel has different specs than one made to handle 3 inches of travel.
I dont mean to start an arguement here, and I agree with what you have said above. But the travel of the stock shocks would only be reduced by about .75" in front and .5" at the back when switching from stock to eibach springs. And the spring rates of stock and eibach are quite close.
I dont think it would make much of a difference in normal or even reasonably fast street driving.
When I intalled Eibach long years ago the guy told the same but months later my shocks started to bottom out. I switch to bilstein sport and what a diference!
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