Vibration on Steering wheel, seat, flooring

[staskaya]

Hi Folks,

I own a 2004 X5 4.4i, I've had my tires balanced few times, air in tires are at recommended psi. I'm not sure what to do, I've vibration in my steering wheel, feel some in my seat, and I feel some vibration on the flooring. I only feel this vibration on highway after 60mph, I don't feel any issues when I'm braking.

Could it be the trust arm bushings or/and ball joints??

Thanks for any suggestions,
Soner