Re: 285 70 17's on a 10A?????
That would put it to roughly a 33" tire if I remember right. If so, yeah, you can fit 33's on a stock JK, especially a Rubicon, without issue. 35's are even possible, but you'd need spacers and some trimming of the rear pinch seams, rock rails, and flat flares. For the 33's, you don't necessarily need them, but I'd recommend a set of 1.5" spacers to push the wheels out some. Will make it look better and won't cause any issues. Will further prevent any rubbing, too.
2011 Jeep Wrangler Unlimited Rubicon
2014 Grand Cherokee Limited 4x4 3.6L Deep Cherry Red