Suspension Suspense
Anything beyond you will need different springs.
If you do a combination Koni Yellows and the highly regarded GC springs you can then adjust the spring perch on the Koni's to the ride height you like.
This has all been great info and my direction is taking shape. I can't help but be impressed with the high regard shown for the Ground Control coilovers w/ Koni yellows. It sounds like a top-quality product that will give me the look that I want, avoid needing an alignment kit, improve handling to a degree and maintain reasonable comfort. Am I right so far?
So I noticed that the GC's are available with a 0"-2.5" drop, or a .5"-3.5" drop. Would the 0-2.5 be my best option, since my goal is a 1" drop?
In parallel, I've been enjoying jesusublime99's thread about choosing a GC custom spring rate. This is what I've learned so far:
Dave: 448F/336R
Difussion3: 350F/400R
bnuk: 400F/400R (very bouncy in back!)
Das Schmoo: 350F/450R (not for everyone!)
jesusublime99: 440F/360R
james3232: 350F/400R
recommended for me: 380F/250R
That's quite a wide range of choices! Since the weight distribution on our cars is 64/36, I would think that a higher rate in the back is a very specialized application, indeed. If the standard (I believe Eibach) rates included on the GC's are 380F/250R, would that be my best option to start with?
Thanks again guys for all your help.
So I noticed that the GC's are available with a 0"-2.5" drop, or a .5"-3.5" drop. Would the 0-2.5 be my best option, since my goal is a 1" drop?
In parallel, I've been enjoying jesusublime99's thread about choosing a GC custom spring rate. This is what I've learned so far:
Dave: 448F/336R
Difussion3: 350F/400R
bnuk: 400F/400R (very bouncy in back!)
Das Schmoo: 350F/450R (not for everyone!)
jesusublime99: 440F/360R
james3232: 350F/400R
recommended for me: 380F/250R
That's quite a wide range of choices! Since the weight distribution on our cars is 64/36, I would think that a higher rate in the back is a very specialized application, indeed. If the standard (I believe Eibach) rates included on the GC's are 380F/250R, would that be my best option to start with?
Thanks again guys for all your help.
If you want to dish out the money for the Koni Yellow/GC setup, I guarantee you will not be disappointed, regardless of the spring rate you choose. A lower spring rate will allow a wider range of stiffness adjustability on the Koni Yellows. With a higher rate, you must run the shocks almost full stiff to avoid bouncing around like crazy.
For a lower cost alternative to the Ground Controls if you don't necessarily want or need the ride height adjustability or custom spring rates is pairing a set of Type R springs on the Koni Yellows instead. You could pick up a used set of springs for less than $100 and it will offer a subtle drop that could be adjusted to around 1" just messing with the spring perches on the Koni's.
Here is a DIY walkthrough in which he is using ITR springs on a set of Koni Yellows. You can also get a sense for how the perches work if you wanted to go that route.
For a lower cost alternative to the Ground Controls if you don't necessarily want or need the ride height adjustability or custom spring rates is pairing a set of Type R springs on the Koni Yellows instead. You could pick up a used set of springs for less than $100 and it will offer a subtle drop that could be adjusted to around 1" just messing with the spring perches on the Koni's.
Here is a DIY walkthrough in which he is using ITR springs on a set of Koni Yellows. You can also get a sense for how the perches work if you wanted to go that route.

Like jesusublime99 said, it is encouraging to see a new member come to this board asking questions clarifying research he had done beforehand. I believe you have more than enough knowledge at this point to make a smart decision on a suspension setup.
Like I said before, it just comes down to how much money you want to spend. Any decent spring paired with Koni Yellows is going to make for a well balanced car that will handle significantly better than stock.
Good luck.


