My car feels like its constantly going over bumps! Even on the smoothest road u can feel it in the back. It doesnt matter at what speed i drive the car its always present. Now I for some reason i remember feeling it in the front before i rotated the tires, might be an illusion but im pretty sure. When i took of the wheel in the back to check for any imperfection it just looked fine and the tire as well. Well from what i can tell ....

could it be tire related maybe out of balance. I did an alignment just about two weeks ago and that didnt change anything.


what should i do....

 

My WAG is it's most likely a bad tire, with a tread separation not yet visible.
Try getting different rear wheel/tire combo on the car (from a dealer or friend with a TL); if the problem disappears then it's your tires and new tires are in order.
Otherwise, maybe a locking e-brake per https://acurazine.com/forums/showthread.php?t=157756?

 

i had the same problem for months til I just could take it any more. The problem lies in your wheel/tire combination. I had four new tire installed at Canandian Tire. So when they were balacing the new tires he shows me how they had uneven threat wear. Then he spent almost half an hour trying to balace the new tire on a rim that's been bent. Have a shop check
if your rims are worped or bent, if they are then that's your culprint 100%

 

Could possibly be a bent rim.