I have had an 01 4.4 and now have an 03 4.6 and have experimented with this issue for many moons with many different tire combinations. My current set up seems to be they way to go(for me at least).

Pirelli PZero Roso 315x20 front 33 psi rear 30 psi. Once the cold tires warm up after few miles (CA) they feel tightens quite nicely. I have also removed as much rear camber as possible as this effects wear and handling as well. Running the same wheel/tire width front and rear has allowed me to rotate front to rear and back. This has added 25%-35% more life to my tires depending on how and where I drive.


tb

PS. The pic's I attached show the old set up with Michelin Diamaris.....

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