46X16X23mm represents 75.6 gear inches.
That sounds about right in between where a person riding on relatively level terrain should start and end up.
A month or two ago when I felt in top shape I could comfortably push 78".
Now, during my recovery, I push 70" and it has really helped my technique.
46X17X23mm would give 71.1", and that seems like a good learning and riding ratio.
I could spend my whole life at 71" and enjoy it.