The door jam sticker is for full load. 5 passengers and cargo. If you drive alone or with 2, I would keep the preassures in the 30s. Will be more cmfortable and with spirited driving they will warm up. Your target preassures will be high 30s or 40
Start with 35 front 38 rear -cold. See how it feels
I think bmw is cautious too because they are low profile tires on a heavy car. So if you drive over curbs or big potholes there is a possibility of pussing through to the rim
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