Read the entire thread my friend.

When you lower a street car excessively, suspension geometry is thrown out the window, instead of arms having equal movement both ways they are maxed out in one direction, roll centre is misaligned.

A race car is setup to be this low by moving, the suspension mount points to different positions than stock, and even include things like adjustable roll centres and sway bars on the fly.

Please research and know what you are talking about, as well as reading the entire thread before you come in and start questioning things.