[fredjacksonsan]

I've always adjusted my tire pressure according to how the tires were wearing. Starting in the neighborhood of the manufacturer's recommendations, check your wear pattern after 5 or 10k miles. If the tire is wearing in the center, it's overinflated. Edges wearing? Underinflated.

Agreed that max inflation pressure should match up with max weight on the tire. However with all the manufacturers and different tire designs and suggested pressures, you can't just go with one number, especially if you are putting a different tire than original on the vehicle.