I wonder, since the curves are subject to the compression of the elastomer components in the suspension which would vary with lateral loading, under what conditions the curves Bill posted are derived.
The 964 RS has a modified "control mount" in the trailing arm. This limits the axial motion and the "Weissach Axel" effect and produce a different curve than the normal 964 trailing arm.
From the 964 RS technical guide:
Edited from the 964 technical guide:
