I keep the S2 around 25psi and the Coupe slightly higher on the back end with the extra weight.
When I went from the Vredesteins to the MPSS on the S2 it needed a couple of extra pounds or it felt slow.
I will try 18 on the car but worry a lot that the small sidewall and precious Rays AeroMax alloys are at risk at that point.
I am assuming that all temps are slightly warm road use?
