I know a higher tire pressure than what's recommended in the manual can help to get better milage.... I recently checked mine and inflated them to 35psi. It seems to help just a bit, but I was wondering a couple of things:

What's the maximum safe pressure--is it the 44 that is printed on my tires, or is it in reality more like 40?

From your collective experience, what's the optimum pressure?

(I drive an '04 HCH; half city, half highway) thanks
--A