Weissach axle

[1] The goal of the initial Weissach axle design was to eliminate lift-off oversteer by allowing the rear suspension to adjust itself during cornering manoeuvres and handle both longitudinal and lateral forces.

[1] It is named after the town of Weissach (German pronunciation: [ˈvaɪsaːx]), where a Porsche research and development centre is based.

[2] "Weissach" is also a backronym for Winkel einstellende, selbst stabilisierende Ausgleichs-Charakteristik (angle-adjusting, self-stabilizing equalization characteristic).

The tendency of a vehicle to oversteer when decelerating is compounded by the compliant bushings found in most trailing arm suspensions.

When the vehicle decelerates and the trailing arms pivot downwards, the links pull the hubs and cause them to rotate inward slightly; the result is toe in, which adds stability and reduces the risk of oversteer.