What is the proper PSI for my tires?

Tiny
JESSICA MERTENS
  • MEMBER
  • 2011 HYUNDAI SONATA
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
I am wondering what I should air my tires up to because on the tire it says 50 PSI is the max and when I air them up to what my car says it makes my low profile tires look way flat.
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Saturday, January 23rd, 2021 AT 1:28 PM

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Tiny
KASEKENNY
  • EXPERT
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
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Saturday, January 23rd, 2021 AT 1:52 PM
Tiny
JESSICA MERTENS
  • MEMBER
These aren't stock tire size I put 17s on it.
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Saturday, January 23rd, 2021 AT 2:05 PM
Tiny
KASEKENNY
  • EXPERT
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.
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Sunday, January 24th, 2021 AT 2:41 PM

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