View Full Version : gps speedo
nathan
19th February 2011, 02:42 PM
i have a navman gps and was wondering if gps speedo is accurate,if it is my car speedo is out by 4 - 8 ks .is gps a reliable option for a speedo
YNOT
19th February 2011, 02:45 PM
Check this thread; http://www.nissanpatrol.com.au/forums/showthread.php?2403-Why-is-GPS-speed-different&highlight=speedo
Tony
the evil twin
19th February 2011, 03:34 PM
i have a navman gps and was wondering if gps speedo is accurate,if it is my car speedo is out by 4 - 8 ks .is gps a reliable option for a speedo
Your GPS will be accurate to + or - 1 KPH and your Car Speedo should be overreading by about 7 KPH at 100 KPH (IE saying you are doing 107) assuming factory tyre size
Bigrig
19th February 2011, 04:09 PM
Your GPS will be accurate to + or - 1 KPH and your Car Speedo should be overreading by about 7 KPH at 100 KPH (IE saying you are doing 107) assuming factory tyre size
Yep - gps far more accurate mate.
Rick
21st February 2011, 10:49 PM
car speedo worth $100s orr satelite worth millions i no which one i would trust
Maxhead
22nd February 2011, 07:57 AM
car speedo worth $100s orr satelite worth millions i no which one i would trust
Never looked it that way..haha. Just remember the GPS itself is probably worth $100 or so
nowoolies
22nd February 2011, 08:40 AM
my nissan gps aint worth #$%^&*
Sir Roofy
22nd February 2011, 10:45 AM
my nissan gps aint worth #$%^&*
probably got sand in it lol
MINE SHOWS 5K UNDER
the evil twin
22nd February 2011, 11:35 AM
my nissan gps aint worth #$%^&*
Mines spot on... which factory Sat Nav do you have... VDO?
patch697
22nd February 2011, 11:38 AM
I use a Garmin sat nav & its been pretty spot on, shows me under by 4 to 5 kms with the 31's on & about 3 to 4 kms over with the 33's
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