Vibration help please!

Strosek

New member
My 1998 Toyota 4runner has a vibration and I have balanced the wheels 10 times! 4 of those road force balanced with Haweka adapter! The car has new shocks (Bilstein), new tires(Michelin), alignment just done, new tie rods, front end checked out ok, drive shaft has new universal joint, new rear axle bearings, new brakes front and back... The vibration happens from 60MPH and up! What could it be? 3 mechanics at a loss...

Any help would be greatly appreciated!
 
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The u-joints got installed after the vibration started in an attempt to fix the problem as did all of the other things listed... But good idea!
 
Truck is all stock except for Tundra brakes and that was after... Problem started after I installed the new tires (Michelin LTX AT2/s and swapped out the transfer case and installed shocks.... at that exact moment! The transfer case was leaking so I put a used one in so I could rebuild the leaking unit at my leisure. I was sure it was the tires because the symptoms scream tires but I was told that the road force unit would have detected that... Road force was done by 2 different shops, both claim rims and tire problems would have shown.
Shocks work great and are high end, tires are high end, and transfer case would not cause this!

One strange thing that happened and this my or may not be related is that a couple time when I was doing a high speed sweeping turn on a highway overpass I got this VERY loud banding sound from under the center console like something was banging it underneath but it stopped after about 5 seconds and only happened twice a couple month ago and not since.

Hope the extra info helps
 

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