Sorry, but woodhog's and Trackrig's answers are wrong.
If you use a Load Range E tire in place of a Load Range D tire of the same size, then you inflate it just like the Load Range D.
The reason those other answers are wrong is that the tables being referred to are MAXIMUMS (or minimum, depending on how you look at it). They are NOT recommendations.
At the very least, the tire should be inflated MORE than those tables indicate. Notice that the truck manufacturer uses more inflation pressure than needed to cover the GAWR.
Is tire wear affected by over or underinflation? Yes, but not very much. Other factors have a greater affect. For example, steer tires tend to wear on the shoulders and drive tires tend to wear in the center and both of those are more prevalent than inflation pressure.
