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The manufacturer sometimes gets it wrong. Older models have door stickers that suggest 26-28 psi... Where modern data suggests that pressures between 30-35 psi are best for preventing heat build up and hydroplaning.
The door sticker minimum is there to suggest what pressure is most comfortable. Look at the maximum load pressure on the door sticker to see what the manufacturer thinks you should actually run.
Running pressures higher than the manufacturer suggests on the door sticker maximum load recommendation will have a negative effect on vehicle dynamics. Usually a harsher ride, and possibly a tire that bounces a lot on rough roads, as the shocks can't control it as well as a softer one, but by and large, it is safe. Safer that softer tires. Better at evacuating rain water. Grippier in the dry because there's more pressure on the contact patch. Conversely, when we go off-road, we air down our tires because we want less pressure on the contact patch, so the tires won't sink as far into the mud... But the pressures we use there would be DANGEROUS on the highway!
I've actually seen center rib wear at high pressures on some extra wide low profile tires, but most ordinary tires will see no extra center wear at 40-45 psi.
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