Search! If you look in the wheels/tires section we just had a whole debate on this started by under construction 93.
Even easier. Here's a link. And to save you reading time. A lot has to do with wheel width and backspace. I'm z'd and bodied on 18x8s with a +42 and they are great. Believe uc 93,ended up with a +40 on his 20. And they good. http://www.toyotaminis.com/forum/wheels-tires-70/another-fitment-question-15590/
cool, will look for pics, good clearance lifting as well? My 4 runner will be bodied on 20's...just doing my homework! Love this site, very helpful guys!