"There are a lot of new ideas that are being examined in regard to their profitability," the former AMG boss told Automobilwoche.
Insiders say the new BMW M5, with a 10-cylinder engine capable of 500 hp, will be available in December.
An M version of the 6 series with a similar engine is planned and might be introduced in 2005. The company also is considering an M version of the Z4 roadster.
Bruhnke said M GmbH would like to build another BMW super sports car, but he said decisions will be determined by U.S. market demand.
M GmbH, which has annual sales of about $3.1 billion, sells about 50 percent of its cars in the United States.
Bruhnke said that diesel models and the BMW X3 and X5 don't fit the sporty M philosophy, but that additional CSL lightweight models are a possibility.
Bruhnke said a new M model should reach a minimum of 10,0000 units during its life cycle to achieve BMW's strict profit demands.