Stock rims are 6" wide, 315's are 12.5" wide. That would be a tight fit, and would not likely wear very well.

 

oh by the way guys i have 285/85/16 on my truck now with no spacers they were on it when i bought the truck but i have no issue with them. i just kept reading how u couldent do that so i thought id throw that out there

 

That can't be right, a 285/85 would be 35x11.5 my 235/80R16 or 31x9.25s are only an inch apart empty an 11.5 inch wide tire would rub. Plus I wonder where the owner would have takin it to get an 11.5 tire mounted on a 6" wide rim

 

Some shops will mount anything. When I bought my 2500, it had 305/70R16's on the factory 16x6.5" rims.

 

I Know This Guys I Do But Im Not Screwin With Yall There Is Only About 3/4 Of Inch Between The Tires And Im Sure If I Load It Down They Will Rub But They Are There Im Tellin Ya

 

That is crazy, very cool though

 

I also endorse The Goodyear Silent Armour. The Goodrich AT KO is a good choice too. Both good AT tires.
I would srick with the OEM size, and go E range. Will not cost much more than D and is much safer.