OK, so there seem to be two primary players in sways for our G's these days.....with Stillen 3rd IMO. So let's just go with Hotchkis & Eibach for the sake of this concept....

OE Specs:

FRONT OE SWAYS are 26.5mm / 416 pounds per square inch
REAR OE SWAYS are 24.3mm / 374 pounds per square inch

Eibach Specs:

Eibach FRONT sways are 32mm
1st setting is 730 pounds per square inch
2nd setting is 900 pounds per square inch

Eibach REAR sways are 29mm
1st setting is 627 pounds per square inch
2nd setting is 741 pounds per sqaure inch
3rnd setting is 860 pounds per square inch

Hotchkis Specs:

Front Sway Bar 35mm (Ø1-3/8") Hollow
+230% Stiffer than Stock G37
+205% Stiffer than stock G37S
+230% Stiffer than stock G37S

Rear Sway Bar 27mm (Ø1.063") Hollow 3 Way Adjustable
+120, 175, 250% Stiffer than Stock G37
+5, 30, 65% Stiffer than stock G37S
+50, 90, 145% Stiffer than stock G35S


So here's the question.....
Are these front/rear sway bar packages designed specifically to work with one another at the specific sizes and stiffness noted by the mfg??.....or, is there potential added benefit from mixing the best, errr biggest, of each brands' offering? Meaning, would it be an even more significant improvement to use the bigger Hotchkis front and the bigger Eibach rear, or is there a point of diminishing return where doing something like this would actually have adverse affects on the geometry of the suspension?

 

No

The Hotchkis at its stiffest rear setting is too much oversteer.
Also a tendency for lift-off oversteer which most drivers cant get out of easily.

 

is the rear you posted for the S or non S version?
Im also debating hotchkis vs eibach sways. hotchkis fronts seem to be too stiff causing more understeer.
not many have put up eibach reviews either so hard to decide

 

I will be getting the Eibach kit tomorrow. I'll post a review once I get them installed.

 

Not at all.

 

so the thing to do is pick a set and go with it.....NOT pull the bigger bar from each set for a combo set as there may be adverse affects?