What brand tires? What load range? If they are the ones that came on it from the factory, they are probably Load Range E, which means they should be good for about 3000 lbs each when fully inflated. There should be a sticker on the driver side pillar with this info on it.
I don't like to make plans. They cause the word "PREMEDITATED" to get used in court!
DON'T FEED THE VULTURES!
My Body is a Temple! Ancient, Crumbling, Probably Cursed . . .