I ran 32s on a saggy 3" lift for a while, on the sawblade ZJ wheels. They rubbed when flexing, but not horribly. I hammered the pinch seam over in the front fenders. Didn't do any cutting. I also have an ARB front bumper, otherwise they definitely would've rubbed on the front bumper.
The "Mall Crawler" - 1998 ZJ Grand Cherokee 5.2 V8, 5.5" LongArms, 32s, 12000lb winch & more.