I do like the Ecopia 422 Plus tires in 215/50 R17". This week was my first time driving on the OEM wheels and new tires. The winters are studded 205/60 16" which are great in the snow, but no fun on dry pavement. With the warmer weather and new tires (even with their 10%/new hit on rolling resistance) I set the best two range days (about 4 miles/kwh) in the urban cycle with a small amount of heat use. My winter average (temps as low as -30C) was around 2.7 miles /kwh
They are happy at about 39 psi with zero shoulder roll over so far.
Not surprisingly, they are vastly quieter than the studded winters, and dry grip is much, much better. They are firm but not harsh on our rather crappy roads here. Not too much squirm at higher speeds, even with full tread depth.
The car's aesthetic with the 16" winter alloys is not so great (but it came with them, and the car was cheap...so all ok
but much better with OEM rims and the Ecopia tires: