Road Wheels & Road Wheel Recommendations?

Hed say this about their C2 wide rim

Q. Dear Mr. Hedtech, how much PSI should I run in my C2 rims?
A. Our wider C2 rims should be run at AT LEAST 11% lower pressure than you would use in the same tires on a 19mm rim. I weigh 165 lbs and run 22mm tires at 80-90 psi. Because the C2 rim is wider, your tire's air volume is greater than it would be on a 19mm rim and PSI needs to decrease.

Excessive pressure will do two things:

• Compress the rim slightly and decrease spoke tension
  
• Harden the tire to such a degree that it no longer has the small amount of flex that it would have at a lower pressure or on a narrower rim. The flex is both lateral and vertical. In the case of the wheel rubbing the brakes or frame, lateral flex is what we are concerned with. As frames and wheels have gotten stiffer and stiffer over the past decade, torsional force on a bike has gotten more noticeable.