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New tires = 20% efficiency loss?!?!

19459 Views 60 Replies 28 Participants Last post by  vicenac
At 83k, it was finally time to ditch the OEM tires. Getting that many miles out of original tires is proof I drive quite gently (most of the time, anyway)

Yesterday I bought a set of Bridgestone Turanza QuietTracks.

And quiet they are, but I sure seem to have taken a heckuva efficiency hit. My lifetime dashboard efficiency average is 4.81 mi / kWh since most of my driving is in warm flat Florida at around-town speeds - more evidence of my conservative driving style.

Yesterday's driving characteristics (even less freeway than usual) should have resulted in a daily calculated efficiency in the 5.0 - 5.25 range, but all I got was 4.21.
Midday, I aired them up to sidewall max (50 psig) - that seemed to help, but not much

Yikes - I sure hope these tires get better with age!
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I'm afraid you learned the lesson the hard way. The OEM tires are designed for a purpose - to maximize mileage. Perhaps go back to them after another 80K on these...
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In the past, I tried polling the readers about their experiences with other "summer" tires besides the OEM Michelin brand with little luck. All had some kind of drawback that ruled them out (example: side wall bubbles, etc). I finally decided just to replace ours with more Michelins. After all, my other maintenance expenses are virtually nil.
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