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Old 02-27-2012, 10:23 PM
CdnoilRAM's Avatar
CdnoilRAM CdnoilRAM is offline
I push the skinny pedal


 
Join Date: Jul 2009
Location: Calgary, AB, CA
Age: 30
Posts: 17,072
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Vehicle: 2009 Blown 349 Hemi
Trim Level: Sport - Modified
Color: Brilliant Black/Snake Skin Green
Engine: 2009-2012 345ci (5.7L) Hemi V8 390hp 407lb/ft
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Larger diameter tires will affect the mileage, the same way that it will affect the speedo calibration. Other things that will affect the reading are things like idle/warm up time, plus you're engine now needs to turn a larger rotating mass, so the mpg will drop, especially if you do a lot of non-highway driving.
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