If you feel it in the seats it may be other than wheels but if you have time, may try as suggested above, to move the front wheels to the rear - keep the wheels on the same side of the car.
Can you tell how the vibration did develop in time ? All of a sudden or over a long period ? Was any repair/maintenance done prior or any part replaced ? Besides the other suggestions from the other members, may also want to inspect the axle shafts (CV joints), these can be easily verified even without removing them
https://youtu.be/u4dRIt2y3TQ These will cause vibrations both in the steering and the floor. Torn wishbone bushes can also cause steering vibrations under acceleration.