Both looks and traction. I’ve been running around on some 245/45/17 Nittos DR’s and I can’t stand them. I only got about 8,000 miles out of the compared to the 25,000 that I got out of my 275’s I once had. I also cut about the same 60’ with the 275 street tires as I do with the Nittos! However, if I couls fit something wide I’d reconsider a drag radial…
I have rolled my fenders a bit, but could still go more. If I can keep the same ‘bulge’ that I get with the 8.5"/245 combo with wider wheel/tire I’ll be okay…as long as I’m not interfering with the frame/suspension/exhaust. Going inward say 1.5"-2" with wheel width looks doable…so if I tracked down a 10.5" wide wheel with a fat tire I could check for sure.
And I know for a fact that guys have gotten away with wider than 275’s on Fox’s…a quick search on corral.net has pics of peoples set-ups. 315…that I am doubting but I still want to try it.