Tire pressure lose

The recommended pressure is listed on that sticker! PSI is in () next to the tire size line. You should have 36 PSI front and 30 PSI rear according to the sticker above.

FWIW, it's a common mistake that people think that they should fill their tires to the pressure listed on the side of the tire. If you read the tire again, that is the maximum that it should be inflated to...regardless of the vehicle it is mounted onto. You must read your owners manual or the sticker inside of the door if US spec and not painted over...
Always check the sticker on the car for tire pressure

You should go check out some Motorhome forums if you want some "spirited" debate over tire pressures. Car tires are like any other tire, there are maximum loads that the tire is designed to carry. Your car door sticker gives you correct pressures for your tires based on vehicle loading.

The 100% method for correct pressure is to weigh the front and rear of the vehicle on a Cat scale or other; then get the manufacturer inflation table for the tire. It will list proper pressure for the full range of weights.
there is a badge on your door sill or in your owners manual that says what you are to run in your tires unless you've changed wheel and tires sizes stay with what your manual says
This information is tailored for optimum ride comfort, often at the sacrifice of tire life and fuel economy. And it's wrong anyway, as soon as you change to a non-stock tire.

We run sidewall max, loaded or unloaded, and everywhere in between in my household. Better fuel economy, more even, and less total tire wear, and handling all the same except for one very light truck (<3200 lbs) sporting truck tires, when it should be running passenger car tires. It tends to break loose a little sooner at 44 than at 35 in the winter, when empty. The Cadillac Eldorado we have corners better at the 44psi max sidewall, even with an empty trunk.

Don't know about the rest of you guys, but we pull many thousands of miles more out of our tires than they are rated for, and they're usually evenly worn when we do replace them. That's my family's experience, your mileage may vary.