I agree with the work emotions, they are common, but for a reason.
http://f10.5post.com/forums/attachme...7&d=1292623008
Those are the forgestars, my favorite wheel personally.
Honestly, if you plan on going big power, I would advise something along the 18x9 front, 18x10.5 rear area. Its not so much about how wide the tire is, its about the quality of the tire. Most slicks you see run are no wider than 275. You have to find the perfect balance between width and stickyness.
Things to consider:
Is it a DD?
Weather it will see based on area?
Amount of power you will be making?
Nitto invos are good, but I would suggest nt555's or nt05's over them. If its more of a dd then nt555's and if not then nt05 are a great street tire(put the radial versions out back when power level needs them)
If you wanna get serious, you can slap on some MT et streets and dead hook with anything upwards of 500 wheel.
Its your choice and whatever you wanna do, do it, but you never see high hp, quick street cars running around 20's that get traction, not that ive seen anyway. Unless you are talking about maybe the new 5.0's or camaros, but they are big cars and look silly with anything less than 19's.
Ill stop talking now lol, hope I helped.