[daepp]

So my wife drives a 5,000 lb SUV. It rides on 19" Continental Tires. The sidewall indicates max pressure @ 51 ps1. The sticker inside the driver's door shows fronts @ 32 and rears @ 38.

One tire must have a slow leak, as the Tire Pressure Monitoring system occasionally indicates low tire pressure. I think they are triggered at close to 30 psi. I have been running them at all @ 40 psi.

My question is - which do you follow? Our truck mechanic at work claims to have filled the tires to the max psi as shown on the tires - for his entire career. I called the local tire store and they said the same thing. I used to follow the door sticker, but it puts the fronts so close to the TPS threshold that my wife worries every time she sees the warning message. So the question of the day is, what psi recommendation do you follow?