I've got 44k miles and will need a new set of tires before this winter. I know there's a lot of posts already about treadwear, price and performance. I'm simply looking for a response with brand and model of tire you've used on your Prius that maintained or increased MPG over the original Integrity.
The attached file shows that there are tires that will improve your MPG. The best I have found are made by Nokian (Finland). Their All-Weather Models (WR and WRg2) are great tires in bad weather and their i3 is good for summer climes. The Michelin MXV4+ that I had on my 2004 Prius was good, but is no longer available in our size (185/65HR15). The Michelin Primacy MXV4 may also be a good choice, but I have no direct experience to confirm it. JeffD