They are a 12” wide rim with a 13.50 tire. Not sure what offset they are, but the damn tire sticks out at least 4” outside the fender well. It throws 4 rooster tails going down the road when it’s wet. Cool to a kid I guess, but I hate it. Don’t mind the looks of it. I get compliments on the truck, but I am not on asphalt all the time and am tired of every mudhole painting the side of my truck, I pull trailers constantly and those big tires put too much wear and tear on everything.