For the Front I have bfg Gforce sports in a 255/40/17 on a 9 inch rim and they are perfect. They seem to rub a little sometimes but its better than 245 and its cheaper than going 265. As for the rears like others said you might need to roll the fender depending on how wide you do go. I would ditch the quads and do what ryclef said. Wheelhop? lol. When I got my new rims and tires I had to zip tie my tail pipe toward my gas tank so it would even let me put my tire on.