Quote:
Originally Posted by wpoll
Well, did my GPS checks - with the results about as expected (but good to know): -
Gauge: 100km/h (locked there via cruise control)
Menu#8 V: 96km/h
MID Speed: 96km/h
GPS #1 (Garmin 60CSx): 96km/h
GPS# 2 (Navman): 96km/h
Did the test over a 4km section of road, in both directions.
80km/h on the gauge was around 77km/h on the other devices and 50km/h sits at around 47km/h so it looks like a straight out percentage increase. Roughly... taking into account measurement errors etc. 
Good to know the cars is actually very accurate, at least with the current (end-of-life) tyres. |
3kph dif at both 80 and 50 is a simple offset but with 4 different at 100 that could be % the word is that it's just a constant offset (3-4 kph) but now I'm quite curious and will have to take some measurements to see what I find. I know at 80 mph indicated im going about 76-77.
Sent from my iPhone using Tapatalk Pro