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Old 06-17-2012, 07:50 AM   #1 (permalink)
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Default NEW RE92 is Terrible for Fuel Economy

Got a brand new set of Bridgestone RE92's on my silver car. Terrible! I never realized just how bad they were until broken in. I think I lost 6-8 MPG. Of course they will break-in at some point and be normal, but when?
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Old 06-17-2012, 09:08 AM   #2 (permalink)
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Going to keep an eye on this. Just bought two new RE92s for my "new" Insight. It already had two other new ones that looked to be recently installed. Sorting through other problems like a bad headlight switch right now, and what may be the O2 sensor (P1164). Car seems to lean burn correctly, but just isn't matching my red one's mileage (72mpg avg for "new" one, 78 mpg avg on older one with three year old RE92s) over the same roads. I was thinking it was the O2 sensor that might be causing this.

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Old 06-17-2012, 09:46 AM   #3 (permalink)
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Quote:
Originally Posted by jime View Post
Got a brand new set of Bridgestone RE92's on my silver car. Terrible! I never realized just how bad they were until broken in. I think I lost 6-8 MPG. Of course they will break-in at some point and be normal, but when?
I am surprised by this. Did you air them out the same as your old ones? We're the new ones installed on the fronts or back?
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Old 06-17-2012, 11:58 AM   #4 (permalink)
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I think it takes about 1,000 miles for a tire to properly break in, at least that has been my experience in the past.
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Old 06-17-2012, 07:39 PM   #5 (permalink)
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I put a full set on my silver Insight. This is my second set, a set on blue about 6 months ago. That set was horrible also. I'm inclined to agree with Larry. They need a little time, maybe a thou, maybe two.

Pressures the same.
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Old 06-18-2012, 04:50 AM   #6 (permalink)
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I haven't noticed this phenomenon... I wonder why.
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Old 06-18-2012, 06:34 AM   #7 (permalink)
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The effect is definitely real. The question I suppose is how big? The Insight makes it notoriously difficult to peg small MPG changes. I said 6-8MPG, but that is a pretty rough estimate. It might be a bit less.
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Old 06-18-2012, 09:22 AM   #8 (permalink)
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I'm with Eli. I replaced a full set on my Insight in January. I had no noticeable drop.
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Old 06-18-2012, 12:18 PM   #9 (permalink)
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I'll be getting a new set on my car tomorrow or wednesday. I will chime back in after i give them a good run to and from work.
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Old 06-18-2012, 12:33 PM   #10 (permalink)
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maybe it is as simple as the increase of weight of the new tires.

what did the old tires weigh?
...still have the old tires?

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