aspeedo error
It is law in most western european countries that the speedo by design can not read less than the actual speed. Due to differences in tire diameter in order for this not to happen they build an error into the speedo. In today's world it seems less than ideal as I get a reading from my GPS and the speedo so I know the actual speed. Do have to say that I have used different GPS and there speeds have varied by over 1mph.
It is law in most western european countries that the speedo by design can not read less than the actual speed. Due to differences in tire diameter in order for this not to happen they build an error into the speedo. In today's world it seems less than ideal as I get a reading from my GPS and the speedo so I know the actual speed. Do have to say that I have used different GPS and there speeds have varied by over 1mph.