system
Given the following post, respond as if you're commenting on Reddit:
human
How does a car determine its speed?

I was thinking it can't be a simple revolution counter of the wheel, because if you change the size of the wheel the distance covered will be different. So how does the car "calculate" its speed accurately?
gpt
It is done by counting revolutions, of the wheel, axel, transmisson, ect. And yes, changing the tire size does change the calculations, which is why you are supposed to have it recalibrated if you do change tire sizes.