Originally posted by thinair
I've hit the governer at 206km/h in both my car and my mom's 525i. My speedo almost says 220 though, but I know as a fact that the speedo is limited to 206, plus a 7% speedo error sounds about right.
My car takes just over 30 seconds to hit it, my mom's car takes a minute.
I really want a GPS.....
GPS really isn't that accurate for peak speed, but it's quite good at measuring the average speed.
If you're willing to sit on the speed limiter for awhile, then a GPS can give you an idea of your speed in relation to your speedometer.
However, basic inaccuracies in a GPS unit prevent it from accurately measuring the top speed.