It’s a little confusing: When you said wheels, you meant tires, but did you replace the wheels? If not, they could be dented. Plus, the tires could be out of round.
First swap the tires and wheels front to rear. The vibration should move from the seat to the steering wheel. If it does, find someone with a Hunter GSP9700 and have them Road Force the tire and wheel assemblies and possibly reorient the tire on the wheel to reduce the RoadForce.
https://www.hunter.com/gsp9700
If moving the tires does NOT move the vibration, then the problem is NOT tires and/or wheels. There is something else causing the vibration and it’s connected to the rear.