Another question would also be what’s the difference between wheel speed and vehicle speed?
In: 620
speed = distance / time
there’s a sensor placed on one of the transmission wheels. This wheel have a small flag on one edge. Every time it spins the sensor counts one. If the wheel spins faster the sensor counts faster; if the wheel spins slower the sensors counts slower. The car computer has a clock in it so that’s how it knows the time between counts. The count is then converted in distance via a mathematical formula related with the tire size. 1 complete spin of the tire = x amount of inches. That’s why you can’t simply change the tire size on the car, you need to adjust this formula as well, putting in its diameter. Then the speed is calculated based on that distance over the time.
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