[ShrimpBurrito]

I don't think so. I got a psi/load rating chart from a Kumho engineer back when I had the 857s, and lowering the pressure simply lowered the load rating. I think manufacturers say that they always want you running the max pressure because otherwise the tire is not going to have the stated load rating. And publishing such a psi/load rating chart would probably be confusing for the industry and most consumers.

So I am of the opinion that a load rating E tire inflated to less than the max pressure (i.e. 65 psi, which is what I use) is better than a fully inflated load range D, and definitely a C tire. It's the effective load rating that matters.

Dave