I just installed a 3" PA body lift on my wifes 99 Quadcab. I am planning on buying tires in the next couple of days. I want the biggest that will work. From all indications so far it looks as if some people are running 315/75/r16's. I am wondering if anyone is having problems with that combination and if I should just step down to 305/70/r16's. Thank in advance for any input.