I do not understand why Performance "handling" as in cornering or braking has any bearing on this at least from what I think Shawn is doing. ie 99% Eco. driven. My feeling is the performance from 30 to 60psi on these tires would ONLY show up at a track on a course with a stop watch pressing the car to it's limits. That is meaningless in a thread about Eco. In addition IMHO I would never exceed the side wall pressure without 1st hand knowledge of the real deign limits. To me if it says "maximum pressure" that may as well come from God. it's an engineering thing folks.
That said,
Eco to me is total cost and I think it's wise to keep an eye on the
overall cost when making changes to improve mpg performance. That is changing the tire pressure from 45 to 60 may save 1% on fuel use but may also cost you 3% more for tire use. Net savings -2%. Put that in $ of the life of the trie to get a fell for it. The cost to replace them is around $500. Figure avg use is 35k that's about $6 per tank of fuel.
That total cost concept is out of reach for many Fit users
based on what I read here over and over, but one I like to understand and quantify.
have fun!
