I'm very pleased with this kit from Silvers! The team helped me get the right spring rates and helped me every step of the way with install. This is my first set of coil overs, and my first time doing a job like this on my own. The fitment is perfect and the adjustments simple. I'm very happy I went with this setup which was well below the cost of the factory setup.
The ride is very smooth, but response is very tight for handling and acceleration with very almost no body roll. I personally went with 12k springs in the front and 9" 12k springs in the rear from Swift. I'm amazed how much quicker the car acceleration felt once the body didn't shift during hard torque.
I would recommend a set of Silver's to anyone looking to upgrade their ride - I now understand why coilovers are an essential part of performance modification.
By the way, my car is the Active Hybrid 3 which has a little more weight and the hybid battery is just in front of the rear axle. I'm sure this setup works well for a typical F30 N55, but it also is working very well for my platform.