My old Insight Turtle (Dr. Horrible in its new life under my son's ownership) has Michelin Energy Savers on it, and my new Insight Ron Burgundy has OEM Potenza RE92s, and I honestly don't see a difference in mpg, feel, etc . . . . . and since my son and I keep swapping places in the top ten Hybrid slots, I don't think the tires do as much as some people claim, unless maybe they're swapping some off-size for OEM.
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