1. 26 I have also fitted 750 x 16 tyres - how does this affect calibration of the speedo and mileometer.

2. Which he used to disparage defective vehicles, dates back to his time as a second-hand car dealer in the late 1970s, and suggests a dishonestly adjusted mileometer .

3. In the article, the measurement principle, hardware circuit and software process of a kind of mine locomotive intelligent speed mileometer are introduced, which have the function of "black box".