Thought I'd share my experience with Tire Stickers.com. Apparently, this is the only outfit that has licensing from the tire manufacturers. Wareaglescott had a good experience so thought I'd give them a try.

Just got my first tire done and I think these look fantastic. Very easy to do and the glue that they send out gives you plenty of working time. Just be aware that once you put it against the tire, there is very little movement after that, so be sure you know exactly where you want it. Oh, and the glue fumes get to your eyes about 3 or 4 letters in, so one could wear goggles if sensitive.

If you like the billboard effect, but want 17" or 18" wheels, this would seem to be the way to go. These are 1.5" stickers on a 17" wheel and fit right in the "green zone" of the sidewall. The rear tires are larger will give a little more room in that area than what you see here.