Although the top speed of the BMW 530 stopwatch is 280 km/h, the fastest speed is 250 km/h. If you want to reach 280 km/h, you need to lift the electronic speed limit.
The maximum value of automobile instrument is mainly set according to vehicle performance, maximum speed limit and safety performance. Because the speed limit of most expressways is 120km/h, the maximum value of the meter is generally less than 300.