Background
A Porsche purists’ version of the age old “chicken and egg” conundrum could well be “what came first - Weissach or Winkel EInstellende, Selbst Stabilisierende Ausgleichs-CHarakteristik?”
The answer to the decidedly less snappy latter query is probably more widely agreed upon. After all, Weissach is the pretty town in the Stuttgart administrative area where Porsche’s long established Development Centre is based.
The tongue twisting stream of German verbiage is just a clever backronym roughly translating as “angle-adjusting, self-stabilizing equalization characteristic.” In Porsche parlance, Weissach lends its name to both an innovative axle and a mechanical effect it was designed to promote.
The Weissach Axle may seem like a prosaic place to start but it was fundamental to the Porsche 911’s progression from fundamentally flawed sports car design to the accomplished and the highly regarded automotive icon that it is today. The fourth generation 993 version of the 911, introduced in 1994, not only sits bang in the middle of the model’s timeline to date but was also the watershed iteration in terms of its reputational development.
Those with a long enough memory will recall early 911’s earning nicknames like “the widow maker” thanks to what racer and journalist Paul Frere described as “a tendency towards immediate and severe lift-off oversteer.” In truth Porsche had been struggling with the suspension set up of the 911 right from the get-go. Early work arounds even included the fitting of cast iron ballast weights weighing nearly 11 kilos behind the front bumper.
The Weissach Axle was a clever contrivance indeed. It reversed the normal tendency for trailing arm suspension set ups to produce destabilising toe-out under deceleration. When this is combined with the 911’s pendulum-esque rear engine configuration, bad things could and did happen. The trick Porsche axle introduced a short, solid link to the hardware set resulting in stabilising toe-in being produced under deceleration.
The Porsche 993 was the first 911 to receive the fully developed axle which proved transformational to its handling, ease of use for less experienced drivers and resulting kudos and reputation. It is almost certain that without the 993 all subsequent 911’s would have never made it to production.







