How low can you go....

[f5fstop]

Originally Posted by H2Finally

By far the single most effective mod to improve mpg was to increase tire pressure. I now increase to 48psf on long highway trips (from regular 42 in city), and get maybe 1mpg better, without changing my driving style (pedal to the metal ).

So, on a hot day, running the x-ways, you are hitting approx. 52 psi in your tires? What is the max pressure labeled on the tire?