[Frank N]

Originally Posted by jakeru

This topic comes up every so often:
http://986forum.com/forums/general-discussions/65450-base-vs-s-weight.html
http://986forum.com/forums/general-discussions/59437-base-s-model.html
http://986forum.com/forums/general-discussions/52676-base-vs-s.html

You mention suspension as an upgraded feature of the S, but I don't think that's true. It may be slightly differently tuned to work better with the added power (and rear axle weight) of the S, and/or presence of lack of a tiptronic, (these options all significantly affect rear axle weight). For either base or "S" model Boxter, M030 is the option you'll want for the upgraded/sportier suspension.

Below is for 2004 S

The Boxster S rides on an optimized sport suspension. Compared to the standard
Boxster, the Boxster S suspension features higher-rate springs and shock damping, longer rear lower control arms that increase toe-in stiffness, larger wheel bearings that increase camber stiffness to provide high-speed cornering stability

http://press.porsche.com/archive/products/press_kits/press_kits_2004/PDF/new/8-10_Boxster_S_Release.pdf