Theoretically when you lower the height of the car it becomes more stable and even its handling becomes good. Lowering of height increases the handling because of the fact that when you lower the car’s chases the center of gravity or mass also goes lower with respect to its earlier position thus preventing car from rolling and making it more efficient in handling.
You also have to consider the spring rate, condition of the road, unstrung weight side-walls of your tires, tire grip, dampening system, the geometry of the car’s suspension and many other things.
But at the moment we are only paying attention in the most popular coilover set up. There are a lot of aftermarket manufacturers coming up with different brands and types of coilovers. The coilovers are really very popular with the racers because of their perfect stability and adjustability.
The coilovers provides you great option of adjusting the right height of your car and in few cases one can the car owner can also adjust dampening and can produce a very good handling. Basically coilovers are of two types the first is true coilover and the other is sleeve type coilover. Both are equally good and any of them can be applied on car to get superb handling.