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when i got mine the PSI on the tires were set to like 45 and 47 front and rear while the recommended pressure was saying 32.1 fronts and 33.6 in the rear which was weird. the next day I lowered the pressure in the tires down to 35 front and 37 in the rear. now with almost 500 miles on the car it says front and rear recommended is is 33 front and rear lol. as I drive the car it changes a little which is weird.
current pressures are reading in the car at 33 front and 36 rear on their own and seem to be staying. Its winter here and the weather has been going from cold at night to about 50 in the day and not much flux has happened.
maybe try running the reset function in the iDrive system settings for tires
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