Slight shimmy in steering

Help! Ever sence trk was new had this problem.took OE Dunlops off & replaced with Michelin AT2's..same problem.also trk seems very loose in steering at higher speeds..Trk has 14000 miles on it now.

 

Its either out of round tires or out of round rims. I have a 2010 tacoma that I bought with 10700 miles that has the same issue, 2 different sets of tires, and still vibration. After 8 balances at 4 different shops, this is my conclusion. On a balancer the tire bounces around and has a noticeable hop. Start at the rims on a spin balancer and look for imperfections and wobble or out of round from the center. Then mount the tire on a good rim. If it wobbles, then your tire is out of round, defective, or improperly installed and damaged. Good Luck!

http://www.agcoauto.com/content/news/p2_articleid/110

http://tires.about.com/od/wheel_safety_maintenance/a/Diagnosing-Wheel-Vibration_2.htm

http://www.tirerack.com/images/tires/vibechart.pdf