Quote:
Originally Posted by gmd2003
The manufacturer is only required to have the speedometer read within 10% accuracy as long as it always reads more than the actual speed . BMW def shoots for around 5% which at 159 mph is 167mph which is exactly what my speedo showed .
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Well that is different than mine. I definitely saw 160 and then hit the brakes on the Vbox run. The Vbox shows 155 as the max speed which would be a 3% error. You can see I hit the brakes pretty hard and I did it right at 160 because the car felt like it was sliding around.