Thought I would post up some pics of my Nitto Dura Grappler 285/70R17 Load Range E tires that were installed June 09. They currently have 65,000 miles on them. The majority of the miles have been commuting and I have towed six times with combined weights being between 10,000-21,300lbs. Non towing I have kept them at 68psi front and 63-65psi rear. If I tow light I don't change the pressures. If I tow in the 4000-8000lb range I up them to 73psi all the way around. Don't ask me where I came up with that number, I just grabbed it out of the air a while back. If I tow heavy they all get aired right up to 80psi. I don't rotate them on a normal schedule, I do it when I notice some feathering on the outside edges of the fronts. They are starting to show slight feathering so I will be rotating them them sometime this week.
Front
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Rear
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Front

Rear

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