I'm doing similar research to fit 315/70r17 on a fresh set of wheels. I used my current setup as my baseline: 285/70r17 tyres on the 8.5" wide Mopar 5 hole wheels, which are basically AEV Savegre with 4.7" backspacing (-1 offset according to the online calculators) instead of 5.2". The tyres barely fit under the guards but the upside of that is there is no rubbing or scrubbing, even under full lock or full compression with my 2.5" lift with proper bump-stops and factory flares.
If I want to run the same tyres on 8" wheels, I would need +5 offset to clear the everything on the inside as it does now and not poke out any further. I don't think inner clearance will be an issue so maybe look for a +10 offset 8" wheel to have zero risk of the extra 5mm outside tyre from a 295 being an issue.
Since I am also running a D30 front diff and I like doing rock-crawling (madness, I know), I want to keep everything as light as possible but finding decent looking and decently priced 5x127 alloy wheels locally has been challenging.
FWIW 285 tyres look to be much more common than 295, so you can probably get a better deal and find 285 stock easier. All you will lose is possibly 3.5mm diff clearance.
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