F Sport also gains the Lexus active rear steering system exclusively, reducing the turning circle by some 20 cm and increasing agility, and tops it off with a variable - ratio steering rack that tightens response as you move from Eco, through Normal, Sport and Sport S - plus on the centrally - mounted driver preference dial. (motoring.com.au)
BMW has taken the system to a new level by adding active rear steering — a system that can electrically turn the rear wheels up to 3 ′ in either direction, also altering the steering ratio. (automobilemag.com)
The Carrera S gets available active rear steering, like the GT3. (roadandtrack.com)