BMW Motorcycles K2x & K4x, Model year 2005

On the basis of rolling quality analyses, BMW Motorrad has ascertained that in the framework of maintenance work on brake discs or wheel changes, threaded fasteners might have been over tightened to torques not in compliance with the values set out in the repair instructions or operating instructions. Cracks in the wheel flange can occur as a consequence of over tightening of threaded fasteners. In the course of a lengthy service life the cracks can propagate and, under worst-case conditions, lead to fracture of the bolted join.