We have come a long way from the ice and snow of the winter. The WRG3's continue to impress even during the warm seasons. I recently had the tires rotated. Didn't see any premature wear at all. On the quiet rides home via the back roads, the Prius always feels secure. Road noise is impressive. I recently read how the engineers worked to reduce tire noise by employing some rather interesting siping on the side walls.
As stated previously, the Prius is no sports car. However, I feel the WRG3 helps me get everything out of the car I can - from a performance perspective. Handling is excellent for what I drive. Wet cornering does not leave me nervous one bit.
When these wear out, I will replace them with the same tire. I honestly can't see myself going back to anything else!