Lowering a car lowers the roll center further than it lowers the CG, therefore the car will have more body roll, which is just the opposite effect intended. Stiffer springs are used to compensate.
https://motoiq.com/the-ultimate-guid...e-roll-center/
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This visually shows what happens to the roll moment on an over lowered car. For cars that are extremely low, like some race and drift cars, the roll center must be corrected for this reason. Check out the difference in roll center height vs CG height in lowered and non lowered examples."]his visually shows what happens to the roll moment on an over lowered car. For cars that are extremely low, like some race and drift cars, the roll center must be corrected for this reason. Check out the difference in roll center height vs CG height in lowered and non lowered examples.
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The often-overlooked disadvantage to lowering is that roll center drops more radically than the center of gravity on most cars. Although lowering the center of gravity and increasing the track width are the two most effective ways to reduce weight transfer, over lowering increases the roll couple and dynamic weight transfer. This can cancel any steady state weight transfer advantage that lowering the center of gravity can have. The huge roll couple created by over-lowering will require an overly stiff suspension to control body movement. And when your suspension is too stiff it won’t absorb road irregularities effectively, which will make it harder to keep the tires in contact with the ground nnd you can’t drive fast if your tires aren’t on the ground. This is called tire shock by us engineers.
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