Yes, I suppose I'm a hater.
You bought a high performance car for cruising around and looking cool.
Then you messed it up by putting on POS 20" wheels.
but to answer your question, you should be running those tires at at least 35 psi COLD. You have little tiny sidewalls that can't protect the stupid wheels you put on. You should probably run closer to 40 psi and give up some tire life and make the ride even worse.