02-05-2018, 06:26 AM
(02-05-2018, 06:08 AM)PowerDubs_imp Wrote: I've read on car forums mention of law in other countries that a car could not go faster than the dash indicated at any given speed so they default to slightly lower than displayed.I am not sure where you are coming from with this?
It is not uncommon for a car to read 3% higher than actual speed. Also explains why I remember being in cop cars and them having a sticker on the dash stating something like calibrated speedo.
But I can tell you that here in the UK there is an allowance in the law for a speedometer to be 10% inaccurate ie you will not be prosecuted if you are doing 33mph in a 30 limit, 66mph in 60 or 77mph in a 70 etc etc.
Of course if you are traveling in/on a machine with a speedo that already overeads by 10% you've got a fair old calculation to make if you want to push the legal speed limits, when perhaps you should be concentrating on the road?