2014 mercedes s550 vibration

Question by raonel12 posted 6 months 2 weeks ago in S-Class

Hi there-

My car has a passenger seat vibration when I hit around 70mph. Steering wheel doesn't vibrate, but sometimes I can feel it in my feet (drivers side). Any ideas as to what can be causing this?

Recently changed a rim that was a bit bent and both back tires are balanced.

Vehicle has 68k miles.