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Joined 1 year ago
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Cake day: July 24th, 2023

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  • That would be very naughty of the manufacturer on a 2012… the wheel speed sensor would be connected to a computer and speed PID reported on the canbus, the computer should be calibrated to the trim level of the car (and the wheels that it came with) to report the correct speed.

    Having said that manufacturers often overestimate speed by ~5% to prevent being blamed for speeding offences.


  • Seriously only downvotes?

    Has no one driven a car with swapped wheels making the speed optimistic or pessimistic?

    What about broken/missing temp sensors? Oil pressure gauges? Battery voltage?

    The only thing you really need is a speed gauge, and you can get that from the wheels, the gearbox, and GPS. Making it easily three way redundant and have the ability to have a backup via your phone or manual gauge.

    This looks like a good fun project, you could make it a HUD and keep all your old gauges.