Do I just need springs to lower my car?
There's no definitive answer since it really depends on your budget, application, and purposes. Lowering springs are a cheaper and easier way to lower your car's center of gravity and improve its handling. Coilovers, on the other hand, can lower the car and make it handle much better with more adjustability. via
Is lowering a car better?
Lowering a car can potentially increase handling, but only if the road is perfectly smooth – which are rare to non-existent. On roads with imperfections you might actually end up cornering slower, as the car hits harder and skips across bumps. via
What happens when you lower your car by cutting springs?
The first thing you need to know is that cutting a coil spring will not only lower the vehicle, but it will also stiffen the spring making the ride and handling a bit firmer. But this is a good thing because lowering a vehicle reduces the amount of suspension travel. A stiffer spring will help reduce bottoming out. via