Middlebridge Group Limited, a Japanese engineering firm owned by billionaire Koji Nakauchi, was already involved with established Formula 3000 team Middlebridge Racing and gained control of Brabham for the 1990 season.
Novi Brabham BT58, ki ga je pogajal motor Judd (še ena od družb, ki jih je ustanovil Jack Brabham), je bil izdelan za sezono 1989.