GT350R tire pressure

[Racerx949]

I have a 2020 GT350R HE with about 500 miles on it. The left rear drops about 5 psi a week. I can’t find a problem in the tire. Should I be concerned about the rim?

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[Vlad Soare]

Or the valve. That's what I'd check first. Try to push the valve sideways in all directions. If you can make it hiss, even a tiny bit, then you've found the culprit.

 

[HEP#15]

^Agree. Most common cause of this type of leak.

 

[460Fred]

Pull the wheel off the car, clean it really well then through it in your pool...you’ll see bubbles.
Or just take it to a tire store you trust. You’re going to need a good tire store anyways. Find one “before” you need one.

 

[key01]

Tighten up the valve stem core with a valve stem core wrench. If you don’t have one buy one. They are $5 cheap.

 

[Tony_the_Brit]

Spray it with soapy water. Look for bubbles. You may have a small nail or suchlike.

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