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  1. #1
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    Aftermarket Wheels and TPMS

    Think I already know the answer to this but how does TPMS handle aftermarket wheels?

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  3. #2
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    Doesn't matter as long as you reset it...
    Now a proud owner of a A3 1.4 tfsi Saloon S-Line, 6-speed, Daytona Grey, Technology Pack, Comfort Pack, Cruise, Advanced Key, Privacy Glass, Audi Parking System Plus, Interior Lighting, Folding Door Mirrors, Light & Rain Sensor. Hold Assist.

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    Indirect TPMS do not use physical pressure sensors but measure air pressures by monitoring individual wheel rotational speeds and other signals available outside of the tire itself. First generation iTPMS systems utilize the effect that an under-inflated tire has a slightly smaller diameter (and hence higher tangential velocity) than a correctly inflated one. These differences are measurable through the wheel speed sensors of ABS/ESC systems.

    On that basis, once the TPMS has been reset the sensors should work off the current values of the new wheels, then any changes would trigger an activation.

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    Cheers guys

 

 

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