[dre99gsx]

1) 3.0si coupe, 2jz (about 100lb more weight on front than S54)
2) KW Clubsport, all linear springs
3) front: 6.4" 504# + helper spring, rear: 4.7" 672# (these are BC springs)
4) track
5) DE events, 20 days per year
6) H&R front sway middle setting, non-sport smaller stock rear (18mm) - sport comes with 19mm, (sway mounting reinforced in front)

The car is "loose", and I exhibit controlled corner entry and mid corner rear slip, too much for my comfort. I trail brake a lot, and it could be the cause, but mid-corner has me more worried. Car also has a bit more front squat that I would like during braking.

JRZ's catalog has these rates:
level1: 450/550 (fr/rear)
level2: 650/750
level3: 800/900

Notice how they are 100 lb diff front to rear.

Stock Clubsport came with 400/Prog (I read up to 700 max in rear)

And, I'm running: 504/672

I want to raise the front spring rate a bit. Any suggestions? I purchased 600lb springs, but am afraid that may be too much. I have an option of 560lb springs. Does anyone know how sensitive our platform is to rate changes? Would hate to hit the track and now get massive understeer - swapping out springs isn't that easy of a task.