This was on my factory 16s at 44/41 psi. I changed how I drove on the hwy to 55mph. Up hills I was closer to 50 and on the declines I was using WS. Takes lots of attention. Im wondering how going 60mph will changed things? The problem is can't use WS on speeds higher then 55mpg because it slows down and can't maintain speeds above 50mpg on flat parts of the road. Not sure what else to do that can keep a decent speed and get 60+ mpg on a tank? My city driving is the same using smart basic hypermiling techniques like p&g and looking at the signals ahead to give best regen when possible and try to play the lights when possible.
I keep to the edge of the first half of the ECO meter before going into the second half and my continuous MPG goes 100+. Is that SHM?