In the years 1986 and 1987, the version M12/13/1 was tilted sideways by 72° for use in the extremely low Brabham BT55 (1986) and more conventional Brabham BT56 (1987).
Nos anos 1986 e 1987, a versión M12 / 13/1 inclínase cara un lado 72° para usalo no extremadamente baixo Brabham BT55 (1986) e no máis convencional Brabham BT56 (1987).