Quote:
Originally Posted by andrewwynn
Wife's car is off about 3 mph at 80 so that's almost 4%.
Decimal of 15 could be 1.5% almost seems like why bother.
240 could be 2.40? That seems more probable.
What have your measured for the real vs apparent speed on your X5?
Weird on BMW to do this. My other cars mostly had acutlal speed speedometer. I would do timed miles occasionally to confirm my speedo was accurate back in the pre gps days.
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Setting up to do this today. I have two GPS units and will monitor the "analogue" speedo, the BC speed readout (via the MID) and the calculated V: value (via menu #8).
Here in NZ we have many roadside speedo check signs. They place them on long straight sections of highway, with a information sign to warn you to get ready, then five more signs, exactly 1km apart. Handy....
01-01-2019, 03:10 PM
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