fruitowl Posted May 7, 2010 Share Posted May 7, 2010 hi guys brain teaser question which is more accurate the speedo on a freelander or the reading on my satnav. the speedo on the car read 70 mph and the satnav read 65 mph opinions please Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted May 7, 2010 Share Posted May 7, 2010 Speedo will always over-read as they may not under-read by law. GPS is probably closer to the truth but I wouldn't rely on it as they are subject to signal levels, lag, etc. Quote Link to comment Share on other sites More sharing options...
Dorsetfreelander Posted May 7, 2010 Share Posted May 7, 2010 Yes most car speedos over read by about 5% and my satnav agrees with this, however my satnav also claims that a nearby beach is 130 feet above sea level so ...... Quote Link to comment Share on other sites More sharing options...
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