Let's compromise...

Tire pressure is a compromise. Optimum tire pressure is based on a multitude of factors. Tire design, tire size, temperature, vehicle weight, road conditions, etc. Take NASCAR for instance. During the course of a race the crew chief is constantly adjusting tire pressures to compensate for track conditions, weather/air temp, chassis adjustments, etc. Do they look at the pressure stamped on the side of the tire? Do they use a set pressure from the chassis maker? No. My tire pressures are based on my own experience and have little to do with whatever Tom or PK or SlowPro run their tires at. They don't have the same tires and wheels, so they run a different tire pressure. I personally don't think either the car mfg tire pressure on the door OR the max pressure on the tire sidewall is optimum. It's going to be somewhere in between. At least for me!