[Billy]

Mr. Figgy; you are correct in that on soft or slick surfaces, at low speed when you need traction, lower psi is better. For example, when the hard core Jeep guys go on sand dunes, they let most of the air out. But I think for freeway cruising, I want as MUCH psi as safety allows. More air makes the tires harder, and it ROLLS much easier. On the Insight there is about 13% more weight on the front wheels than the rears, thus the higher psi recommendation on the front. (38, 35) I purchased an expensive, accurate gauge, and check my tires often. I run 50 lbs on the front and 48 on the rear. billy......