So I have the eRange tires on the 2019 SV+ now. I was away for a week (tested a Bolt), so got to this a bit later than expected.
The eRange tires cost my $108/piece from Walmart
on sale. 205/55/r16.
I took an initial loop at 60mph for 4.7miles/kWh (63F ambient) which was close to my tests with the old ecopias late last year. I need to do another side by side with both Leafs.to get the comparative test. At 60mph, the GPS speed bounced between 58 and 59 mph.
The grip and steering response with the tires on dry surfaces is good and you can kind of feel the reinforced sidewalls when driving compared to the ecopias.
I will report back once I have more data.