I moved the stock wheels and primacys to my WRX - on that car they feel great! Nice quiet ride. Car feels light on its feet. I don't ever lose traction or squeal the tires.
On the BRZ they squealed around every turn and had no grip. PSS solved that problem.
I was shocked how different the Primacys behaved on the WRX. 500lbs heavier and awd really tames them.