2009 Prius 55 mpg with 40 psi with High Purity Nitrogen in Tires

I have a 2009 Prius 55 mpg (70 F. degrees) with 40 psi with High Purity Nitrogen in my Tires, Still has nice ride quality and with good traction. Dave's Service Center in Ivyland Pa has High Purity Nitrogen available for your tires.