Cold weather and low tire pressure message

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Larger tires contain more volume, therefore, Because of the larger volume of air in these tires, it experiences greater pressure drop overnight when the temperature gets cold. So the 33's may set off the warning faster than the 32's if everything else is equal.

As for reprogramming. The reprogramming procedure is only used to allow the BCM to recognize the electronic serial number of the sensor. Changing rubber should not affect the sensor.