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      11-08-2012, 08:42 PM   #1
GreekboyD
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Canada
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Drives: 2009 BMW 335d
Join Date: Jan 2012
Location: Toronto, ON, Canada

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2009 BMW 335d  [3.75]
17" vs 18" Wheels and Fuel Mileage

In the summer on my 18" wheels I'd be getting 7.5L/100 km or 31.4 mpg. Now with my 17" winter wheels I'm getting 5.4L/100 km or 43.5 mpg. This is highway mileage that I'm talking about.

It must be the tire size?