I think all tires all the same. Maybe just the car weight makes a difference. Usually for mid size sedans the recommended tire pressure is around 32psi. I wouldn't go below this value, 34-35 shouldn't hurt (it's all about tire wear). Would only be a matter of comfort.
What's perhaps much more important, is the pressure gauge accuracy: it's varies widely, sometimes by 5psi or more. Better use a quality digital gauge or even better use two different models and compare (portable compressors tend to have accurate gauges - well at least those that aren't the cheapest ones)
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