The plane which is defined by the head-to-foot and anterior-to-posterior directions in the human body. A stack of images acquired in the sagittal plane separates images by their left-to-right locations. The mid-line sagittal plane bisects the left and right half of the human body.
Under heavy braking, the rear tires lock up and the axle begins to bounce; the amplitude of the bounce becomes so severe that the tires finally develop enough traction (when slamming hard against the pavement) to rip the whole axle assembly free of the vehicle.
The most common reason for a car to shake is related to tires. If the tires are out of balance then the steering wheel can shake. This shaking starts at around 50-55 miles per hour (mph). It gets worse around 60 mph but starts to get better at high speeds. Sometimes brake rotors can be the cause of shaking. If your steering wheel shakes while you are braking then the problem could be caused by out of round brake rotors. This vibration can also be felt through your brake pedal. Another common problem that can cause shaking is when a brake caliper sticks on. When this happens you will experience a vibration through the steering wheel starting at 45 to 50 miles per hour. It will get very bad the faster you go, and you will also smell a burning odor when you stop.