Hey Eric, Love the Zilla's, Nasty lookin beast of a tire. My 2 cents on the 12x12 all around, I drove a foreman about 5 months ago with 12" all around and the steering was brutal, thats the main reason I wanted 9's on my front and not 10's, most tires I looked at only offered 10's and 12's, the bear claws gave me the option of 9's and I put 12's on back and it steers like a dream. Just my opinion, plus my bike with the 9's on front and the 12's on back the outside width is the same front to back, I'm sure 12's would make the front about 4-6" wider in front at the side knobs.
Ron