Up front you're going to want at least 1000+ lb/in springs for a track/autox oriented car. The rears get a little trickier since the desired rate will depend largely on whether you keep the spring and damper separate or switch to a true coilover. Mine are still separate and I have 800lb/in springs in the rear with no rear sway bar.
You also want to make sure your dampers are valved to match the spring rates you're using.
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'11 370Z Nismo #528 Fast Intentions | Stillen | Motordyne | Uprev | CSF | Zspeed | Z1 Motorsports | AST | Swift | SPC | SPL | Whiteline | Hotchkis | Bride | Schroth | Robispec | Cusco | Nismo | Volk | Forgestar | Hoosier | RJM
'17 Titan Bone Stock
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