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Originally Posted by mhabs
Nice and love the pic! Thought I remember seeing a video of an M3 at 300 kph indicated speed but per the GPS unit was really around 280, so around 7% in that situation. Would also be nice to see the digital speedo as well. thx for sharing
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Good information. I was under the impression that speedo error was just a fixed percentage. I have personally verified 3-4$ at speeds below 100 mph in my car, GPS vs. indicated. However, someone else also posted that they thought the percentage rose at higher speeds. I would love to see that information if you can find it.
There is certainly no reason BMW couldn't program the speeds to do anything they want. My idea that the correction is a fixed % is, I guess, a bit outdated and sort of an "analog"/"mechanical" way of thinking.