SPRING RATES & DROPS: ALL IN ONE THREAD!!

terryz

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After so long, has anyone figured out the spring rate for Eibach pro-kit?
Several sources point out that they are not progressive. I had them with Koni yellow and think it's a little too stiff for DD. Knowing the spring rate would give me some idea about my ideal spring rate.
 
BmacIL

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terryz said:
After so long, has anyone figured out the spring rate for Eibach pro-kit?
Several sources point out that they are not progressive. I had them with Koni yellow and think it's a little too stiff for DD. Knowing the spring rate would give me some idea about my ideal spring rate.
Click to expand...
200/800

What are your Koni settings? It's pretty easy to get a bad ride with the wrong damper settings, even with softer springs.
 
terryz

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BmacIL said:
200/800

What are your Koni settings? It's pretty easy to get a bad ride with the wrong damper settings, even with softer springs.
Click to expand...
About 1 quarter from soft for both front and rear. I have also experienced with higher damping settings, but found softer rebound gives me slightly better ride. I am not sure if softer damping always give better ride.
 
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terryz said:
About 1 quarter from soft for both front and rear. I have also experienced with higher damping settings, but found softer rebound gives me slightly better ride. I am not sure if softer damping always give better ride.
Click to expand...
Not always, no.

I'd try going up a bit in front, to like 3/4-1 turn. It should help keep the car flatter overall. No matter what you're going to have a "sporty" ride, but the control of the body changes how harsh it feels.
 
terryz

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BmacIL said:
Not always, no.

I'd try going up a bit in front, to like 3/4-1 turn. It should help keep the car flatter overall. No matter what you're going to have a "sporty" ride, but the control of the body changes how harsh it feels.
Click to expand...
Do you think lowering the car also has an adverse affect on the ride because of reduced suspension travel other than higher spring rate? I am actual considering switching back to stock height, with either my stock non-pp springs or a used set of pp springs.
 
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terryz said:
Do you think lowering the car also has an adverse affect on the ride because of reduced suspension travel other than higher spring rate? I am actual considering switching back to stock height, with either my stock non-pp springs or a used set of pp springs.
Click to expand...
Not unless the bumpstops are not adequately trimmed, or suspension bushings are not clocked. I know Eibach uses their bumpstops in their rates, but I would think you'd be better off trimming those too.
 

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Whiteline EB and v6 lowering springs.
Front 170 in/lbs Rear 673 in/lbs
Lowers Front 35mm (1.3 in) Rear 30mm (1.1 in)
Whiteline GT
Front 202 in/lbs Rear 673 in/lbs
Lowers Front 35mm(1.3 in) Rear 30mm (1.1 in)
 
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GuardEcoBeast said:
Whiteline EB and v6 lowering springs.
Front 170 in/lbs Rear 673 in/lbs
Lowers Front 35mm (1.3 in) Rear 30mm (1.1 in)
Whiteline GT
Front 202 in/lbs Rear 673 in/lbs
Lowers Front 35mm(1.3 in) Rear 30mm (1.1 in)
Click to expand...
In/lbs.
Man, those are some soft springs! :lol:
 
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spring combo, SP089 with SP086

BMR Tech said:
ALL BMR Springs are Linear Rate/Wound

BMR SP080 Performance Springs: 1/2" / .50" R
170lb/in Front
740lb/in Rear

BMR SP083 Handling Springs: 1.2" F / .50" R
300lb/in Front
980lb/in Rear

BMR SP086 Drag Springs: 1.2" F / .50" R
150lb/in Front
800lb/in Rear

BMR SP089 Minimal Drop Front Springs: .875" Drop
170lb/in
Click to expand...
Will mixing SP089 with SP086 Work well? Where I live I am rubbing with my current springs Steeda Linear Ultra lights. I need more ground clearance and I plan on running 325/30r19 tires in the rear and 285/35r19 in the front on SVE gt350r repops 19x10 front 19x11 rear for street , and getting a drag setup. currently running full steeda stop the hop package.
 
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SVOBullitt said:
Will mixing SP089 with SP086 Work well? Where I live I am rubbing with my current springs Steeda Linear Ultra lights. I need more ground clearance and I plan on running 325/30r19 tires in the rear and 285/35r19 in the front on SVE gt350r repops 19x10 front 19x11 rear for street , and getting a drag setup. currently running full steeda stop the hop package.
Click to expand...
Yes they work quite well, though being an EB the drag fronts will drop about 1" instead of 1.2". If you still want the minimum drop 089's, they'll lower the front around 0.7" for you. The Drag rears are SP088, fyi.
 
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Steeda Ultra Light Linear definitely drop more than advertised , I needed to space mine up , tired of dragging everywhere.
 
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SVOBullitt said:
Steeda Ultra Light Linear definitely drop more than advertised , I needed to space mine up , tired of dragging everywhere.
Click to expand...
Are you dragging at the very front or in the middle (like on speed bumps and such)?
 
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speed bumps, high crown parking lot entrances, It seems like around here no one has lowered cars in mind.
 
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Thanks I will be replacing them.
 
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