There are some people who are bolt-on guys and don't know how to fabricate anything. When they mess something up, they tell everyone that no one else can do what they just attempted to do.
Generally a spring's purpose is to support the weight of a car and keep it from bottoming out. Stock springs were engineered/designed to support the weight of a car, so I believe spring rates close to stock, do what they were designed to do if a car is street driven. I believe heavier shocks and lighter wheels keep the tires in contact with the road longer during bumps and depressions.
In a racing application such as a banked turn, the car will "weigh" more than stock as it is pushed down into the banking by cornering forces, so heavier springs than stock are needed to keep the car from bottoming out.
In a racing application such as a car getting airborn, the car will "weigh"
more when it lands, as it is pushed down toward the pavement by an "increase" in gravity, so heavier springs than stock are needed to keep the car from bottoming out.-Bob
A stock, cut spring will still have the stock spring rate. Aftermarket lowering springs have increased spring rates, usually about 25-30% stiffer than stock so it won't bottom out. If you cut stock springs, it will bottom out very hard and give a hellish ride. You'll blow your shocks and your car will ride ghetto. If you only want to lower your car and you don't have the funding to afford Tein, Neuspeed, or H&R, get some cheap ebay coilovers or invest in some Drop Zone Race springs. People who cut their springs to lower their cars, are cheap asses and shouldn't even be modifying cars IMHO. BUY SPRINGS and lower your car the right way the first time!!!!!!