Thread: 89 Metro XFI - MPG Decrease w/ Larger Tires
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Old 08-28-2008, 12:47 PM   #3 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
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Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 54.46 mpg (US)

Appliance car Mirage - '14 Mitsubishi Mirage ES (base)
90 day: 51.82 mpg (US)
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My guess: your odometer is now off due to larger tire diameter. It's under reporting your distance traveled, as your speedo is under reporting speed. You may only apparently be getting worse fuel economy.
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