I have a 2004 6mt sport sedan. It has quite a lot of miles but has been well maintained. It rides very smooth at city speeds but once I get over 70mph the car will gradually start to vibrate. I can see it in the passenger seat and then in the rear view mirror, then I can feel it myself and it continues to get worse. Like its working itself up. I rotated the tires and the problem stayed. The front steering wheel still felt fine. No vibrations in it so i know it must be coming from the rear. If i had to guess it feels like the rear driver side. If i turn to the left on the highway sharp it feels like the vibration goes away for a brief moment until i straighten up. Possibly a bad rear wheel bearing but I have never had one make the car shake like that, just make a loud growling noise. I hear it could be the compression rod bushings. Maybe the driveshaft carrier bearing. Has anyone else had this issue and solved it?


its really annoying...

thanks.

 

did you balance the tires when you rotated them ?

could be a bushing on that side of the car also