Here in Alaska, the only law I know of pertaining to lifts/tires is that if the vehicle is not of stock height that it must have mudflaps. My 10.00 x 15 Dunlop Dune Tractions (came with the rig, I'm upgrading to to BFG MT/KMs in 33x10.50 in the spring) stick out about 3 inches on each side with the white spoke wagon wheels I'm running (no fender flares--I'm going to put some on this winter). Coat the windows, roof and hood nicely whenever I walk on it in the mud, but since she is stock height, I'm legal without mudflaps. Had a few smokies give me the funny look as I went by (they may have been wondering how I could see out as dirty as I got a couple times!), but nobody has ever bothered me. Just today as I was coming back from a trash run, I was behind a late '70s Dodge flatbed running about 12" or so of lift and about 44" tractor tires (you know, like the ones Bigfoot had on in "Take this job and Shove it!"). We went right by a couple of city cops and they didn't even blink--he had mudflaps, but the tires had to stick out at least 6" on a side.
"If it ain't broke, try harder!"
or
"If at first you don't succeed, change the rules!"