Thanks all, i new it would be a ruling issue,
Being in the heavy vehicle industry for years found most of the trucks to be very close to actual speed.
Cars seem to be getting worse.
Is they were all within 2-3 kph out would be fine.
I found that when you sat on the speed by the speedo it became...
Has anyone found a fix for inaccurate speedo reading?
Oddometer is spot on but speedo is out.
Even with new tyres, still out by 10%,
To do 100kph by gps, speedo reads 110kph,
60kph is 66kph.