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Old 04-19-2020, 06:15 PM   #6 (permalink)
Master EcoModder
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Join Date: Jun 2009
Location: SC Lowcountry
Posts: 1,453

Geo XL1 - '94 Geo Metro
Team Metro
Boat tails and more mods
90 day: 72.22 mpg (US)

Big, Bad & Flat - '01 Dodge Ram 3500 SLT
Team Cummins
90 day: 21.13 mpg (US)
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Iím curious.

Did you use the same rim and tire combination with and without a flat covering ?

Because if you didnít, the difference noticed could have been from the overall weight of the combination used. Not the wheel covering.

Lighter wheels make a BIG difference.

Lighter wheels and a good LRR tires will make a even BIGGER difference.

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