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Old 05-07-2014, 12:23 PM   #7 (permalink)
ConnClark
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Join Date: Jun 2008
Location: Richland,WA
Posts: 985

Das Schlepper Frog - '85 Mercedes Benz 300SD
90 day: 23.23 mpg (US)

Gentoo320 - '04 Mercedes C320 4Matic
90 day: 22.44 mpg (US)
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so long as the tire is the same type and has the same tread problem its not going to be a problem. Yes the differential will spin a little. Yes he will notice a very slight drop in mpg. But if the other tires are not very worn the and the difference in circumference is not very great he will not burn out his diffs.
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