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Originally Posted by Mahler9th

In my experience, for the majority of stock street cars and street car driving applications, corner balancing with scales is not necessary.

If you set the car up with ride heights in spec, the factory design parameters are just fine.

Even at lower-than-factory ride height specs, corner balancing is likely not going to change the way most drivers perceive handling for most types of street driving... even spirited/fun driving on windy roads.

I have been doing my own set up for 25+ years with a variety of Porsches and other cars, and I have helped many friends. I have leveling platforms, scales, and the ability to measure with high accuracy and precision. But my application is performance driving and racing.

Years ago I had a stock 993 cab. I lowered the suspension by installing aftermarket springs and factory US M030 shocks. I did not do that alignment myself-- I had it done by a dealer tech who is a fellow racer and has served on and/or run the PCA tech committee for a long time. The result was a great handling street car-- better than at factory ride height.

We did not need to corner balance the car-- for street driving it just would not make any difference.

Caution,
Corner balance is critical for proper braking and cornering as well as overhaul handling.
When I got my car from the previous owner all corners were within 1/4” height. The braking was horrible at anything greater than slow driving speeds, go faster and the car would pull all over the road depending on braking intensity. At high effort braking, it was scary, one front wheel would lock prematurely, and the car was squirrelly. I aligned it with strings and corner balanced it with scales and it became a pure delight to drive from parking lots to the limits of adhesion. Now with the new suspension it will threshold brake from 60mph to 0mph hands off.
Some pagers from FSM Group 44: