Vibration at 40 mph and whining noise at 65+

Please help guys!

New Tacoma owner! just purchased my dream truck, a 21 trd off road 4X4 with 60K Miles. Driven it about 500 miles and noticed a bouncing/vibration at around 40+. It’s mostly in passenger side I gather, I feel the vibration through the gas pedal as well. Additionally, at high speeds while accelerating I hear a high pitch noise coming from the rear of the truck. (Link to YouTube video below volume UP) when I let go of the gas, noise goes away.

does anyone have any idea what could this be? I am thinking a bering or the differential.



https://youtube.com/shorts/-gV2VLGiNxQ?si=4lZaECFsRW6BiCLW

 

Get used to all kinds of noises and quirks buddy. I’m still having a hard time getting used to all this stuff after 7 years of owning 3rd gen tacomas

 

It’s so strange, a few years ago my job gave me a 2017 tacoma to drive for work and it made none of those noises or vibrations. My 21 Trd is still under warranty and I intend to be a pain in the ass until they find/fix something. I understand it’s a truck and it will ride much different than my previous car but I think both the noise and the vibrations are extreme enough that constitutes further investigation.

I appreciate the feed back!

 

Rotate tires F-R and see if vibration moves.

If yes, suspect tire balance.