Why do police cars have certified speedometers, while civilian cars do not?
In: Engineering
It’s illegal for a speedo to show you are travelling under 30mph when you are doing over so manufacturer’s actually calibrate your cars to lie.
Because parts wear and people usually don’t have the correct tyre pressure in tyres with optimal tread, your car will say 30 but you’re probably doing 27 or 28.
A sat nav will give you a more accurate reading.
Latest Answers