3" will be fine to fit 285's (roughly the 33" equivalent.) They will rub on the inner front fender a bit under turning, but it's not unbearable. I'll be trimming the inner fender soon enough, just haven't gotten around to the task lately.

I've just finished testing the Tuff Country kit and will soon post an article. As a teaser, this kit would be fine for the mostly street and provides needed ground clearance for the '05 in the dirt.

The truck rides on 285/75 BFG All Terrains and 16X8 Discount / America's Tire house brand alloy rims. I run the tires a bit soft (34 front / 31 back) and they ride just right on the street. HTH

Mike