I know that I can fit 315/75/16 tires with 3" body lift but I've heard that if I do that I would need to buy a wider wheel. If that is true then what size tire should I get because I don't want to have to buy wheels, I just want to buy tires.

 

look for a 11.5" wide tire that will be good!

 

I agree. Just go with 285/75-16's (33x11.50) or 295/75-16's (34x12.00).