I second the don't rotate. I asked my bro when I got my '12 with aluminiuminum wheels how he rotates his...he said, "Don't rotate 'em." I thought he was just funnin' with me. He wasn't. He was serious. All my other duallies had steel wheels, and I rotated them with the spare every 5k. I did have one tire pulling on this truck (the '12). Alignment was good, it was just one of the front tires was pulling to one side. So, I had to have the fronts and rear outers remounted. That was around 5 or 6k. I plan to just replace the fronts when they are worn, and leave the rears. Thankfully Ram put some decent tires on these trucks. I had a set on my '04 and they dry-rotted. If I can keep these from doing that, I shoudn't have to replace all six for quite some time since the rears don't wear very much at all. And like others said, I keep 70-80 psi in them always.