Tire Headaches

[TXPNTCGMC]

I came up pretty empty when searching previous threads for answers so hopefully somebody out there can chime in.

Truck: 2003 Sierra Reg. Cab SWB, stock height
- currently running 265/75/16 BFG AT's on stock wheels but...now they're bald..

Goal: I want to shift towards a higher performance tire setup with wider wheels running in the back and possibly a bit taller. I love the look of beefy performance tires in the rear but really havent seen many newer model trucks like this.

Option 1: use stock wheels, but getting a larger width would become an issue for the rear
Option 2: Go with my 18x8.5 American Racing Piranha's, problem is finding tires with that certain "look"
Option 3: try and sell the 18's and get new ones that may better fit this need

Most of the trucks that I see running 18's or 20's have been lowered and use a more lower profile tire. I've had a hell of a time trying to find larger tires that fit this wheel size. I will get some better pictures up tomorrow to show a better idea of whats goin on. here's what the truck currently looks like as it sits...thanks