There won't be any interference, being so tiny. But since 265/70/17 looks small on these trucks, I don't think you will like how they look. I think once they are on the truck, you'll take one look at it and say " Oh, what did I do?"
Remember 245 is the width, 65 is aspect ratio (percentage of width) dictating sidewall height. So 65% of 245 vs 70% of 265(stock) will be a much shorter, silly looking tire.
Did I mention it would look stupid?