http://forums.rennlist.com/rennforums/9 ... nsion.html1) 968 CS / 968 Lux without M030 :
a) Springs
- Stiffness : 28 N/mm, constant
- Length : CS 324 mm / Lux 348 mm
- Diameter : 106 mm
- Wire diameter : 11.6 mm
- Color code : CS blue dots / Lux beige dots
b) Torsion bars
- Diameter : 25.5 mm
c) Sway bars :
- Diameter : 26.8 mm front / 16 mm rear
2) 968 CS / 968 Lux with M030 :
a) Springs
- Stiffness : 28 N/mm, variable
- Length : 329 mm
- Diameter : 124 to 110 mm (variable)
- Wire diameter : 11.7 to 12.2 mm (variable)
- Color code : white and yellow dots
b) Torsion bars
- Diameter : 25.5 mm
c) Sway bars :
- Diameter : front 30 mm / rear 19 mm (manual) or 18 mm (tiptronic, Lux only) adjustable
I'm just quoting my own Suspension summary.
To sum it up, the CS standard suspension is merely a Lux standard suspension with shorter springs and set lowered at the rear from the factory.
A CS with M030 will have the exact same suspension specs as a Lux with M030.