Best tire pressure for Fuel Economy

[sickpuppy1]

Originally Posted by vincentg

is nitrogen better than just air? it gives out more handling but i dont know if it really changes the car's fuel efficiency

The advantages of nitrogen are, its dry, no rust to wheels or sensors or permeation into the tires. But considering most wheels outlast the car, I don't think that's a big deal. The main advantage is its consistent. Air expands when it gets hot so if you set your tires to 40 and drive a long trip, they may end up at 44 psi. Nitrogen does not do that. you set them at 40 and it stays at 40.