Some BMW 135i owners report experiencing violent shaking at high RPMs and under hard acceleration, which can be attributed to several potential causes. These issues may include damaged inner CV joints leading to vibrations that escalate under load, and faulty ignition coils causing engine misfires and hesitation during acceleration. Additionally, problems with the suspension system, such as blown rear shocks or improperly installed components, can contribute to this shaking. Engine-related issues, including misfires or other mechanical problems, may also be responsible for the vibrations. Furthermore, unbalanced tires are a simple yet common cause of shaking during acceleration and at high speeds. It is recommended that owners seek a professional mechanic's assistance to accurately diagnose and resolve these issues.
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