If you follow the link below, Toyo tire of Japan has multiple PDF files on the construction of tires and wheels, how they work together and also talks about vibration and road force vibration

Informative for those who want to understand more about the tires.

They do recomend road force balancing interstingly enough, and point out many reasons to do it that our own people here on this site have posted about.

One interesting reason for tire vibration is if too much tire lubricant is used and the tire spins on the wheel as a result.

Anyway, for those who hunger for tire / wheel knowledge.

http://www.toyojapan.com/tires/tire_talk.html

Follow the links from this main page.