I was getting my DD inspected on Friday so I took the opportunity to ask the guy what the rules are on tire protrusion. This is for Virginia so you'll hafta check your local juristiction for any clarifications. In VA, the tires can protrude from the fenders 4". That is measured from the most outboard feature of the fender to the most outboard tread feature. So the bottom line is that I am currently leagal (barely) but if I go to a more agressive tread or something with side-biters, I may not be. Fender flares or mudflaps are legal ways of getting around this restriction. Some localities may also allow you to add an amber light above each fender and be legal as well. Now for the caution: What's legal at the inspection station may not be legal in the eyes of your State Police ... and he's packing ... and he's on the same team as the judge. If he tickets you ... guess who wins.
BTW Eric. It looks great - very professional.
Tom