245’s can be run pretty easily on the Duster’s. I’ve got 245/45/17s are on my Duster. I’ll have to measure to my wheel opening to compare to Brian’s Duster, but I’m running an HDK slammer suspension so I’m pretty sure it’s every bit as lower if not lower. I didn’t do anything to the fenders when I had it lowered on 1.03 torsion bars, but the HDK ended up dropping it at least another inch and the tire would rub the lip at full lock, so I ended up rolling the fender lips.
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I guess here I had it at 23.5” but I think I raised it up some due to the tires hitting the bottom of the inner fender when I hit decent sized bumps.
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