Quote:
Originally Posted by GH85Carrera
Many of the new Porsches have rear wheel steering that is all electrical or computer controlled.
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Lots of cars have had 4ws over the years, many of them being dependent on the speed of the car, ie, low speed turns (like u-turns or in a parking lot) had the rear tires turn opposite the front tires. High speed the rears and fronts turned the same direction to help with things like fast lane changes. I've got to assume that most of them were not purely mechanical like other cars.
https://www.hagerty.com/media/maintenance-and-tech/four-wheel-steering-is-having-its-moment-again/
"Many four-wheel steering systems faded from popularity by the early 2000s, but the technology has made a comeback with modern machines such as the Porsche 911, Lexus LC 500, Mercedes-AMG GT R and GT C, Lamborghini Aventador, Ferrari 812 Superfast, Ferrari GTC4Lusso, and others. Some version of four-wheel steering is even offered on mid- and full-size sedans from Acura, Audi, BMW, and Lexus. Not only has the technology evolved, but at the price point these (mostly) high-end cars inhabit, the cost and complexity of four-wheel steering is more palatable."
Some Nissan 300ZX Twin Turbos in the '90-96 range had 4ws (4 years after they put it in the Skyline GTR).
https://www.hemmings.com/stories/article/1988-91-honda-prelude-si-4ws
"The first automaker to sell a four-wheel-steer car in the U.S. was Honda: the 1988 Prelude Si 4WS...
The "Steer-Angle Dependent 4-Wheel Steering System" was conceived as an active safety feature to enhance emergency handling, as well as low-speed maneuverability, steering the rear wheels in the opposite, or same, direction as the front wheels, depending on the angle to which the fronts were turned. Its fully mechanical design differed from the hydraulic-mechanical and electric-hydraulic systems used by Nissan, as well as by Mazda on the 1988 626 Turbo 4WS that followed the Prelude Si 4WS to our market. And the benefit to Honda's sharp-looking, 2.0-liter DOHC 135-hp two-door was a turning circle cut from 34.8 to 31.5 feet, plus enhanced maneuverability and stability."