Man i would think you'd be fine. You wont know till you try. If you get some and they rub get some spacers, or more lift.
I have a 3" black and I'm about to be running 295/70/17 and there was plenty of room I think with a 3.5 spindle also you will be fine 315 is just a 35 lol posted from my texting machine thingy
Well its settled ill get the 315s and try em on and if they rub or look too big then ill get my 2" block. Thanks guys. Sent from my piece of shat.