The claims of Berger and Alboreto were backed up by the speed trap figures. The fastest car on the long run to Tosa was the Lotus-Honda of Piquet timed at just over (1.5 km/h faster than the McLarens). The Ferraris were much slower at , and were some slower than the McLarens over the start-finish line (McLaren were fastest there at almost . In fact, both Ferraris were almost slower over the start line than the atmospheric Benettons (who were also the fastest of the atmos at Tosa with ) and were also slower at the start/finish line than the Zakspeeds, showing just how much trouble they were in.