Shocks and struts

[daltron]

Can anyone review the Koni's, Ford racing track ones and the Steeda Pro action? Which one is the stiffest? Best for track?

Don't rule out ISC or BC coilovers.

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[SteedaTech]

This.

Stock wheel rates for GT PP are 165 lb/in and 168 lb/in front and rear, respectively.

That motion ratio is also at stock ride height. It has migration through the wheel travel, which means lowered cars have a little bit different nominal motion ratio. Even more important though, is the fact that the roll center migration is pretty significant with ride height in the rear of this car. The rear RC drops a lot more than the front for the same amount of lowering, which will induce understeer without a roll stiffness increase in the rear. Even if you stiffen the rear, a lowered roll center will want to make the rear roll more and will make it less eager to turn into corners.

I like that BMR chose to only drop the rear 0.5" for this and aesthetic reasons.

We have a new hybrid spring coming this fall that address rear roll center including front roll center with a new a control arm. keep you posted.

We designed this spring with the top Winston cup team and Porsche.
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