Originally Posted by Q45tech

The normal reason for changing is from wear and changes in the rubber isolation bushings. In order to maintain as new you will need to replace bushings and arms with bushings...............wear and tear items like brakes and clutches.

Shocks are probably less than half their brand new oem rebound stiffness and usually are done by 60k or 4 years from wear amd tear. [Intenal nitrogen pressure leakage and seal wear].

Of course there is also metal shock tower bending from impact stress and heavier than oem wheels and tires that steady increase negative camber.

If you want perfection constant rebuilding will be required, since weight vs durability was the goal to minimize purchase price.