u should have 2" blocks in the back stock...

Im fitting 305/70/16's on 16x10's on mine with crank and trim.

 

yeah I'll just stuff some 305s in there

 

speaking from much personal experience.
With trimming-
You can fit 315/75/16's with cranking and a body lift
You can fit 305/75/16's with just cranking

Without trimming-
You need at least 6" of lift to clear 315/75/16's usually more like 7"
You can fit 305/70/16's with a body lift and cranking.

 

I had a 99 silverado 4wd with a 3'' body lift and ford torsion keys cranked up and 315/75/16 fit no problem on a 16x8 wheel.


My brother has the wheels and tires now on an 02 gmc 1500 4wd with just the ford keys cranked up and they fit with no rubbing.

So the 315's will be fine as long as you use a 16x8 wheel

 

hey there.... btw whats his offset on the wheel...

Mine is -24 on a 16x10 with a 305
i find it kinda hard to imagine fitting 35's... well i have 16x8's on my truck now...