Tauranac persisted with this apparently conservative approach based on wind tunnel tests he had carried out in the early 1960s, which indicated that a more complicated inboard design, with the springs and dampers concealed under the bodywork, would provide only a 2% improvement in drag. He judged the extra time needed to set up an inboard design at the racetrack to outweigh this small improvement.[11] At the front the suspension consists of unequal length, non-parallel double wishbones. The front uprights, the solid components upon which the wheels and brakes are mounted, were modified from the Alford & Alder units used on the British Triumph Herald saloon.