[MaSnaka]

I had a severe vibration issue after I went with the GY Billboards bias ply. Shook bad at around 35 and then again at around 70mph. Balanced on road force, balanced while spun on the car, rims checked, balanced again. I never could solve the problem until I went with a different brand tire. The Mickey Thompson ET's radials made all that vibration and frustration go away. Changing tires just might solve the problem for you too. Good luck.

John