Ferrari fear Michael Schumacher could still miss out on his record sixth Formula One crown despite the German needing just one point from the last race of the season.
Technical director Ross Brawn said the haunting memory of Nigel Mansell's failure to win the 1986 title for Williams from a similar position of strength would keep the pressure on Ferrari right to the end.
"It would be a tragedy for us if we got that close and didn't win it," Brawn said. "In many ways there is more pressure just to score one point than going into a championship when it is pretty equal."
An eighth-place finish at Suzuka will allow the German to overtake the late Argentine Juan Manuel Fangio in the sport's record books.