The best look I have seen is a 17x8 wheel with 4 1/2" BS and 255/60-17 tires. You might be able to get a 275 tire, but that would be pushing it. You can go bigger on the wheels as you reduce the tire ratio (45, 40 series, etc), but I'm not a fan of the rubber band look. You might also be able to go up to a 10" width, but again that would be pushing it and would probably require a 1" offset for the leaf.