looking up tires 225 75 16 .... what load rating will i need ? , not towing anything we will be traveling with 4 kids so the back will be loaded up with stuff. lol

 

Whatever is recommended. Or what it came with from the factory.

 

personally I would stick with the "E" on a 2500. the max load rating on the tire is usually at 80psi. on the 96 2500 i used to own I kept the fronts at 40psi and the rears at 45-50psi until I was hauling something heavy. I had 235/85-16s on mine.