i have to disagree with the non-rotation nay-sayers. It does add a few miles to the life of the truck, unelss your suspension is absolutely flawlessly tuned, in which case there is no benefit to rotation. Mine aint, so I rotate, and I get more miles on a set of tires than if I don't. I've tried it both ways on the same truck, always turns out I get a few more miles on em when I rotate - approx 6-10k estimated. (this is on my dd, not my 66 - it unfortunately doesn't see the miles my dd does
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