I agree with your statement. You simply cannot go wrong using the pressures as defined in the door jamb. With that being said, my experience driving road course tracks the best response is 1 or 2 psi more than the door jam recommendations. In normal every day driving you would not see a difference. Probably the best thing you could do is check your tire pressures on a regular basis with a high quality gauge. Once a month should be enough.Happy and safe driving!