Thanks for the responses. I will check rear control arms. In my original post, I forgot to mention that the first thing I did was check tire balance and had them rotated to see if anything changed. No change. After balancing tires, when I took it to shop, the front lower control arms bushings were b...

My 2007 C70 t5 (80k miles) has vibration you feel in the seat when accelerating. Vibration will end when the car gets up to speed or if you let off the accelerator. It doesn't matter if accelerating at 20 or 50 mph, you feel vibration. Service tech said it needed new CV axles, so replaced those and ...