[ntmatter]

Another option, if you want a really perfect wheel and tire setup, is to get your tires shaved. Tires are not, as a general rule, perfectly round. When mounted on your wheel they'll be slightly out of true, so even on new and perfectly balanced tires you'll get a little vibration.

You can have your tires shaved, which is basically having them turned on a lathe after the tire is mounted to the wheel. This results in a perfectly round outer tire diameter, though it'll get messed up if you ever have the tire off the rim. I did this for a set of race tires once to get the tread depth right and it was like driving around on silk.

The other downside is that you're scraping off good tire until all everything is evened out, so this will significantly reduce tire life.