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Originally Posted by 93blackSER
suspension: lowering the car lowers it's center of gravity: lower center of gravity equals better handling. suspensions are made to be stiff to decrease body roll and stiffen the chassis. all this leads to better handling. the stiffer the springs, the stiffer the chassis and the lower the body roll. ride comfort is also sacrificed.
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This isn't exactly right either. Stiffer springs won't stiffen your chassis. The chassis is the unsprung mass that the suspension system holds up (springs, dampers, control arms, axles, wheels, etc are not part of the chassis). The difference is that installing too stiff a spring can cause your tyres to slip from imperfections on the road or insufficient lateral grip from the tyres. Making your chassis "too stiff" (in my experience, very difficult to do : P) will only make your suspension system work better because everything will be held in place by a more solid backing. The stiffer the springs, the harder it will be to maintain total ride comfort over less-than-smooth roads. However, less body roll does not directly relate to a harsh ride. With the proper suspension geometry and damper adjustments, it's not impossible to build a car with a sporty suspension system with very little body roll, a low center of gravity, and a fairly comfortable ride.
