What is the proper PSI for my tires?

You should have them around 35 PSI give or take a couple pounds. I am attaching below the detail about how to set them. However, are these the stock tire sizes or have you changed them to a larger wheel size?

The pressure should be about the same but some tires may call for a little higher pressure. Also, get a picture of what the tire looks like when it is filled to what the door placard calls for in the door jam and we can see what you are seeing.

https://www.2carpros.com/articles/flat-tire-change-it-easily-by-watching-the-pros

Thanks

Okay. That is not going to make much of a difference. So let's do it this way, what is the pressure you have them set at when they look too low? Then at one PSI do they look like they are inflated properly?

No matter what you decide to set them at, you need to keep an eye on them for improper wear. As soon as they start to wear unevenly you need to rotate them and adjust the pressures accordingly.

This means if they are over inflated, the center of the tread will wear faster. If they are under inflated, the outside edges will wear faster.

See below for an attachment that illustrates this.