I'm wondering what spring rates you guys are using? I know different tracks require different rates, but a ball park would be nice.
My setup as of now:
Dropped spindles (1 and 1/8th inch I believe)
RSR front coilovers with spacer on each end and 115nm springs
28mm front sway and 26mm rear sway bar (RSR)
AE86 5.1 KG springs that are way too short
![Shocked :shock:](./images/smilies/icon_eek.gif)
Bilsteins in the rear (CAN BILSTEINS HANDLE SPRINGS FROM 5-7KG??)
225/45/16 ES100s
My old springs rates were around 200lbs/inch and 150lbs/inch front and rear respectively. New spring rates (dunno about wheel rates) are around 700lbs/inch front, 280 lbs/inch rear if I did my math correctly.
I would just imitate Rons suggestions on spring rates for good handling (125/70, 115/60) but my understanding is the dropped spindles will effectively make my front spring rates stiffer than they are due to a higher RC?
I've noticed with my car with the rear sway bar on second to softest, and the 5.1 KG rear springs, my car understeers pretty hard. The question is, what spring rates would you recommend I start off with? I was thinking something in the US that is equivilant to a 6.5kg spring, but will this be enough?
Also, my car is much lower now b/c of the coilovers being a bit too short and the ae86 springs being to small, I think I'm noticing excessive throttle induced oversteer. Could this be because the watts link pivot is not much higher up in respect to the chassis' CG, or is that just a side effect of having stiffer rear springs? Should I be looking into relocating the pivot lower?
I'm new in this area and I'd appreciate any theory or suggestions. What can you guys teach me?