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      07-14-2016, 05:42 PM   #17
Tenspeed
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Drives: 2011 135i E88 DCT
Join Date: Aug 2015
Location: Upstate, SC

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Went out to check my speedometer against a GPS this afternoon and discovered something interesting. The speedometer was 2 MPH fast from 30 to 100 MPH and at 110 MPH it increased to 4 MPH fast.

I didn't have the gumption to take it on up today, but will check it someday in a better location. I don't believe the difference will increase 8 more MPH to be 130 actual MPH at 142 MPH indicated, so I still have questions.
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