Heavy – Thicker oil (heavier damping) makes the car more stable, and makes it handle more smoothly. It also makes the car jump and land better. If damping is too heavy, traction could be lost in bumpy sections.
Softer – Soft damping (and springing) is better for shallow, ripply bumps. It also makes the car react quicker.
Quick Note: Damping should always be adapted to the spring ratio; the suspension should never feel too ‘springy’ or too slow.
Heavier Front – The turn radius is wider, but smoother. The car doesn’t ‘hook’ suddenly. The car is easier to drive, and high-speed steering feels very nice.
Softer Front – The steering reacts quicker. More and better low-speed steering.
Heavier Rear – Steering feels quick and responsive, while the rear stays relatively stable.
Softer Rear – Feels very easy to drive, the car can be ‘thrown’ into turns. More rear traction while accelerating.
Quick Note: If one end of the car has slightly heavier damping than the other, then that end will feel as if it has the most consistent traction and the most stable when turning in and exiting corners. A car with slightly heavier rear damping, or slightly lighter front damping will feel very stable turning into corners on bumps or whoops sections. It won’t feel ‘touchy’ at all.