Thanks for the good info. I don't plan on doing any serious off roading like many on the site but I do like the look that bigger tires offer. I may end up just getting the biggest stock size and see if that'll be enough for me.
Measure first, from middle of the wheel to bottom of the flare
If its 19 inches then 245-70-16s , if 17.5-18 the 235-70-16s