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| Rashers Member Since: 21 Jun 2015 Location: Norfolk Posts: 3522   
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I wouldn't like to say for sure. What Tracker do you have fitted??
Every sat nav I have owned with every car I have used them within usually show the car speed to be higher than the sat nav. I would assume the tracker would do the same (if it uses gps to calculate speed like a sat nav). What's it like at other speeds? |
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17th Jul 2016 9:09pm |
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| MC84 Member Since: 22 May 2016 Location: Near Bristol Posts: 360 
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I have always believed a stand alone sat nav would give you very accurate MPH readings. In all the cars I have used them in, the car speedo reads a tad higher than the sat nav as again I believed the speedo's were made to read a little higher than actual speed to compensate with slight inaccuracys as it's better to read higher than lower, less tickets that way! Mike
Hard Top 90 TD5 2001 Ford 100e 1959 www.youtube.com/mikemakesit |
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18th Jul 2016 5:25am |
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| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
have your tyres all-ways been the size i.e. 205 80 16 and now 235 85 16 0r 7.50 16 as larger tyres will have affect on the calibration of your speeds
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18th Jul 2016 6:34am |
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| Huttopia Member Since: 23 Feb 2016 Location: West Midlands Posts: 1972
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The wheels and tyres are as it left the factory. The tracker is Trackstar. It seems to be consistently high even at 30mph the breadcrumb is saying 34-35. Just noticed I've got a chipped windscreen - that didn't last long! Is the correct part no LR 042759?
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18th Jul 2016 9:56am |
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| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
ok as factory
windscreen Clear - LR042760 Green tint - LR042725 |
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18th Jul 2016 3:55pm |
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| kmac Member Since: 07 Oct 2009 Location: Middlesex Posts: 1309 
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Have you got or can you borrow a car GPS? Then you can get another data point.
My speedo always reads a little higher then my GPS |
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18th Jul 2016 6:55pm |
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| VeeTee Member Since: 06 Mar 2011 Location: Somewhere Posts: 1512 
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Every phone nowadays has GPS...
Cheers, Vincent
1959 Polynorm 1/4 Ton Trailer, Olive Drab Green (sold) 1970 M416 Military Trailer (Camping Trailer Conversion), Epsom Green (sold) 1975 Series III 88 V6, Light Green (sadly sold) 1996 Defender 110 CSW 300 Tdi, Epsom Green (sold) 2000 Freelander 1 TD4 3-drs, Silver (sold) 2006 Freelander 1 TD4 5-drs Facelift Automatic, Tonga Green (sold) MySite |
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18th Jul 2016 7:28pm |
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| Huttopia Member Since: 23 Feb 2016 Location: West Midlands Posts: 1972
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I downloaded an app called GPS status and it showed the speedo to be accurate at various speeds. All good.
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25th Jul 2016 11:21am |
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| Motoberg Member Since: 01 Oct 2015 Location: Aberdeen Posts: 104
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my Navigon app was saying 73mph on the defender speedo was bob on 70mph !
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25th Jul 2016 11:52am |
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