Got my new Nokian Entyres in today and got them installed, wheel alignment ok except for rear right is 0.5 but it still within specs. The Tire Express shop I used to install all 4 tires had set the air pressure to 40 PSI, as I drove off and took it onto a stretch of road at around 45 - 55 mph, the tires felt really good, quiet but at 40 PSI they still felt a little to squeeshy or spongy... infact from looking at them they look too low, so I went to the nearest air station and went with 50 PSI on all 4 tires. The max PSI on these tires is 51 psi. At 50 PSI, these tires felt awesome, I mean talk about Low Roll Resistance, they roll effortlessly, you can actually feel no drag with these tires when you first take off, they look meaty and wide and have and (outside / inside) label on the tire wall itself to indicate which way they are to be installed.
At 40 PSI, Both GPS's were reading 2 MPH difference, at 50 PSI it was almost perfect to -1 MPH difference. I had already made the Speed Calibration within the Nav settings to -2.5 a few days ago.
Using my Decibel -10db Iphone App, the sound was very quiet at cruising speed, 35 - 45 mph and around 68db with a peak of 74db inside cabin sound.
Economy wise, no difference so far, with the Ecopia's and these Nokians they pretty much read the same, 4.1 to 4.2kwh. Later tonight the wife and I will be off to Coronado for dinner, its a 12 mile commute each way so I will see if I can improve on those Kwhs. With these tires you feel as if you need to re-learn the car as with the Ecopias you needed to give it some power to get it to move, with these they just want to roll. It could be that these a freshly new. They suppose to get better with a little more wear on them.
I return back to work Sunday night and that is where I set a benchmark, I know that the GOM doesn't help much but I always get to 53 Mile left on the GOM when I get to work, usually at 55 - 60 MPH all the way, its late when I head to work and I can go that slow on the hwy. I will report back Monday with stats to see if these tires helped any on that trip. These tires are Finnish Tires but are made in Russia. They are pioneers in LRR tires, set the standard way back, that and great reviews is why I went with them.
Update, tonight's trip gained me 4.3Kwh.
Fred