[Garfield]

Since your not competing against me in the US, I'll tell you
I was told the new Kumhos would require more pressure, people were telling me to start at 45lbs in the front!. Since I'm running a very different car from before (Miata), pressures are very different anyway. But, for the ideal balance, 4lbs. less in the rear seemed great. My runs were very close together, more than usual, and I found 35lbs to be the minimum for the front (31 rear).
Now, take this how you want, I've always argued that the Kumhos (old ones) loved to run the lowest pressures until they rolled to the edge of the tread. I did the same for the new ones and it worked great. Without a true "test and tune" I won't know for sure for awhile, until I get a chance to run a bunch of runs with higher pressures.
But it's very simple to me, the higher the pressure, the smaller the contact patch.

I do need to note that we run mostly on Asphalt around here, concrete would definitely require higher pressures, as much as 40lbs front.
Also, air temperature was around 45 degrees, pavement was probably around 75 degrees.