Thread: poor gas milage
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      02-27-2014, 09:58 AM   #4
upstate650
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Drives: 2014 650xi Gran Coupe Msport
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2020 BMW M340xi  [0.00]
The diameter isn't off - they are the proper size. It's just the soft winter tire compound. A lot more rolling resistance than stock tires. They were mine, and my new winter set up in a stock size is getting me the same mileage.
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