I looked on Tirerack.com and found the Michelin Energy Savers for $96 each and a reasonably comparable non-lrr Michelin Harmony priced @ $107 each. This would make the payback instant.
Comparing the cheapest set from some unknown brand to a Michelin is kind of an apples to oranges comparison.
Also Honda Insight owners swear that the factory Bridgestone Potenza 165/65R14 are great mpg tires and can be had for $87 a pop from tire rack. These might be a closer fit than going all the way up to a 15" tire.
Kirk
__________________
|