After hitting a pot hole I have discovered a nick on the inside off my offside wheel, not drama to repair, however I do feel a bit vibration coming through the steering wheel. Not a great deal, but enough to notice a difference.
Wheel could be buckled. I had that on my Cupra TDI. Noticeable around 70mph. Some wheel refurb places can take them out.
Wheel weights may have knocked off. Get the wheels balanced. Also a good way to see if there is a buckle.