After much testing Piquet found the car to be superior to the conventionally suspended FW11B. The new suspension was an active suspension system similar to the one Lotus had been using all season on the Lotus 99T, but was renamed as Williams Reactive Ride due to the Lotus team having copyright on the 'Active Suspension' name for the system. The Williams engineered suspension was also lighter, less complicated and drew much less power from the Honda engine than did the Lotus example.
Piquet found the car superior after extensive testing; the new suspension system was an active design similar to Lotus's all-season use on the Lotus 99T but renamed as Williams Reactive Ride due to copyright issues. The Williams-engineered suspension was lighter, simpler, and used less power from the Honda engine than the Lotus example.