V_88:
Hey, I am thinking this JY209-01 sensor would be a good thing to buy for measuring the RPM of the wheel.Which would be the best sensor for the RPM measurement of the wheel? Some of them are Hall effect sensors. So which would be the best thing to go with?
Well, you would have to figure out where/how to install it. You are really getting out of my wheelhouse with auto sensors. I don't suppose the car has an ODB-II interface? If so there might be a sensor somewhere already on the wheel train that you could tap into. An auto gear-head would have better answers for you.
Maybe start a thread on the Sensors forum to see if anyone there has experience picking out a sensor both for wheel RPM and the exhaust. Don't cross-post your questions on multiple forums though. Many people read multiple forums and they don't need to see your question many times.