One problem related to service brakes has been reported for the 2011 BMW Z4. The most recently reported issues are listed below.
Tl- the contact owns a 2011 BMW Z4. The contact stated while driving 30 mph the vehicle began to shake violently. The driver applied the brakes but the vehicle did not slow down or stop. The driver maneuvered the vehicle to crash into a curb to get it to stop. The vehicle was towed to a dealer for diagnosis but the contact was not informed what caused the failure. The manufacturer was notified of the failure. The vehicle was repaired. The failure and current mileage was 33,000. Dt.