Hey Guys,

Been having a lot of vibration on the highway lately (especially between 70-80 MPH). Discount Tire has balanced my tires 4 times now with no success in fixing the issue, so I took it to a mechanic. He is saying that the lower control arm bushings are blown and need to be replaced.

I have read the threads on the benefits between replacing the the entire control arm versus the KMAC Bushing kit. The question I have is.... Is there any difference in ride comfort with these two options? Ever since I replaced my broken motor mounts with the Mercedes mounts, my car has been really rough. She is my daily highway commuter (~140K Miles) and I am just about to get rid of her due to the vibration getting so bad. Just not fun to drive anymore.

Not sure if the stiffer motor mounts are causing the rough ride and vibration or if the control arms/bushings are really what are causing the issues.

Also, is this the right part? I saw that someone mentioned that this person posted the wrong part number, but may or may not have updated it since then.
https://k-mac.com/product/mercedes-r...shing-502016j/

Thanks.