Not to hi-jack but I was on a road trip in my '79 240D this weekend and discovered that my odometer is "fast" by 1/10 of a mile every 4 miles. I am running 195 tires in place of the factory 185s, but I believe they have the same diameter as stock. I need to check the speedometer with my GPS.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine