My_types_is_red

Hey guys, could really use some help. I have searched the forum but im not sure how to word what I am looking for. Anyways, I realized that about 2-3k miles ago that I could feel a vibration coming from my car at around 60+ mph. It didn't seem to be coming from the front end, it was really hard to tell which part of the car it was coming from but my guess is the rear end. I thought that it might just be because my rear tires were pretty much bold. So recently I put some 255/40/17 continental extreme contacts on the rear, and good years on the front and got a full alignment. At first i thought i had solved the problem because i couldn't hear the vibration (upon further inspection it seems that it didn't go away just got fainter because of my big tires.

Whatever the issue is it seems to be getting worse.

If I am driving and shake the steering wheel back and forth it feels like my rear end is getting ready to go sideways and isnt stiff like it should be. Today i was going about 75 playing with a mazdaspeed 6 and i went to lane change and ALMOST lost it. something is definitely off. Like I said the rear end feels like its completely unstable at pretty much any speed over 40 mph now any idea what this could be ?? THANKS

2007 Acura TL Type S

paperboy42190

iTrader: (7)

loose suspension parts, broken sway bar bracket, worn bushings, compliance bushing, etc so many possibilities we need much more info