Reply With QuoteI drive to my speedo - because I've double checked it, and it's about 5kmh under.. I figure that way I'm just be cautious driving past speed cameras. On my daily trip to work there are 7 that I know of!
Be aware there is a slight delay on the GPS because of signal transmission time, but the speedo is instantaneous.
The display on the GPS may actually be an average of several readings, to avoid jitters from multiple readings.
Driving in a straight line the GPS should be fine, but when curving variations are possible.
Also, interruptions to the satellite signal may cause the reading to freeze.
It is possible to be stopped and notice the GPS is still showing movement, while the speedo shows the vehicle is stopped.
YarnMaster
I drive to my speedo - because I've double checked it, and it's about 5kmh under.. I figure that way I'm just be cautious driving past speed cameras. On my daily trip to work there are 7 that I know of!
88 Perentie FFR - Club Rego
93 Discovery 1 200 Tdi - Club Rego
03 130 Td5 Single Cab
06 Discovery 3 Petrol
22 Defender 90 - Full rego
Master
SubscriberMe, too.Originally Posted by Tombie
Speedo - I went into the CCF and modified it so my Speedo and True Ground Speed are a match.
Mind you, it does my head in on the highway especially when behind Toyotas. I swear their speedos read 10 under on factory settings!
Tombie, what setting did you adjust? For me it was Tyre Size MSB - IPC. Tyre Rolling Radius had no effect.
If at first you don't succeed, that's one data point. - xkcd
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2011 Discovery 4 SDV6 HSE
OldBushie
It’s been a while. I think I did the same....
Swaggie
Speedo:
My Disco2 has a speedo calibration unit installed, so 100kmh reads as 100kmh, 55km/h reads as 60km/h.
My Audi's speedo reads correctly against the GPS.
Cheers
Slunnie
~ Discovery II Td5 ~ Discovery 3dr V8 ~ Series IIa 6cyl ute ~ Series II V8 ute ~
Swaggie
I have checked my speedo several times against gps.
I am running 265/65x17's and know if I'm showing 110 on the speedo I'm actually doing 101.
Consequently if I'm showing about 120 I know I wont get booked in a 110 zone.
If I actually sit on 110 on the M1 posted speed I constantly get brake checked.
Master
Either!
105 km/hr on the speedo = 100 on the GPS, so I just put the cruise control on 106!
Wizard
I also know exactly what speed I am going,so don’t hold up the trucks that are sitting on an actual 105km/hr in a 100 zone,
Trucks doing 105K in a 100 zone , isn't that e-legal .
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