928s have a unique suspension to all other Porsches. When aligning, it is necessary to follow this procedure:

1. Measure ride height at all four corners.
2. Lift the car to install the wheel sensors and calibrate.
3. Lower the car back onto the alignment rack.
4. Using the racheting straps, pull the car down 1" below the measured ride height for at least 1 minute. This settles the suspension.
5. Release the straps an perform a normal alignment. Failure to follow this procedure, as specified by Porsche, will result in rapid wear of the tires. Just "bouncing" the car to settle the suspension will not work, as the 928 takes about 250 miles to of driving to relax the suspension bushings.

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