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TonyR1973:joker97: you are probably ok.Speedometers usually OVER-read and by a fairly linear percentage, not a fixed margin - that is to say they read higher than true - normally 6-10%.
Speedos are usually underestimating by an average 6km/h, esp if your tyres are not new.
that puts you at 59km/hr
from my observations its about 2-3kph at 50kph and about 4-6 at 100kph
so if your speedo is saying 100 you are actually going 94-96kph
the slower you go the less it over reads
