Since I took the plunge and softened my ride with 16" wheels and Michelin Premier tires (LOVE them), I have the factory Toyos and swank 17" wheels sitting in my garage. Any interest out there? Both sets have less than 500 miles on them.
It is funny that the "five" trim forces you to have low profile tires. I was recently looking for a 2017 Prius V, and there were a lot of available "fives". As an Uber driver in Philly, I can't see driving such thin tires on potholed streets. I considered buying a five, then buying 4 16 inch rims and tires to soften the ride as you did. The math didn't work; I wound up buying a four instead. Would have liked the LED lights.