Small update to the tire saga.
I called Americas Tire this morning and the Pilot Sport Cup 2 had arrived. I stopped by to take a look and grab that sidewall. I was reluctant because I did not want it to be as stiff as the RE71R and I didn't want to regret my decision.
I'll put it on a scale of 1 to 10 for stiffness at the corner of sidewall and tread. If Continental DW is a 1 and the RE71R is a 10, the PS4 is a 4 and the Sport Cup 2 is a 6.
Yes, the Sport Cup 2 for all its raves is weaker than the RE71R at that location. IMHO, this does not make for quick lane changes and tire response. I have no doubt the Sport Cup 2 has great ultimate grip. It may (or may not) have more ultimate grip than the RE71R. However, for an AWD with my style of driving, the RE71R will perform better.
With Michelins, you will need a decent amount of stretch to keep the contact patch from having some slop.
The RE71R runs a tad wider (tread) than the PS4. Still, it has less slop when I rock the car side to side. Go to your front fender and carefully push the car to the side in quick little jolts (don't push in your fender). You will see what I am talking about.