So with the Boxster it appears to be pretty common and maybe even the norm that it shows 3 to 4 mph above actual. That being the case I am not going to worry about it. Thanks everyone.
It's not the calibration of the "side-of-the-road" signs as they match GPS. Mine reads roughly 4.5 mph faster.
So to be safe I just do 10 over the limit on city roads and 15 mph over on the highway.
OK. It's not to be safe. It's just to get to McDonald's before they stop serving breakfast. They'll usually still serve you if you're late, but it's the old stuff and I want fresh preservatives and faux meat.
Boxster
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1997 Porsche Boxster
Hybrid Mode
