[flawless]

hi everyone,

I was told to measure and keep my tire pressure for all the tires at 35psi.

the weather been up and down and yesterday it was 70f+. I checked the tire pressure while driving for 2 hours and it was 43psi per tires.

I know the tires heat up but should I factor that heat up when I manage the original psi?

should I keep it around 32psi to compensate for heat ups?

I have xse stock 19 inch tires

 

[Luftmasse]

You check tire pressure when it is cold in the morning. Depending how soft or how stiff you like your ride. If you like stiff, you can pump 3-5 psi higher. Also look at the tire's maximum inflation psi.

My tire's maximum inflation spec is 51 psi. I like the ride stiff and other reasons, I pump them to 40-42 psi, dêpnding on how much treadlife I got left. It is just personal preference.

 

[ylumlf4250]

Tire pressure should always be checked when the tires are cold (not driven for 3 hours or more) Use a good digital gauge and check them at least once a month. Use the correct pressure that is on the door decal...35 psi.

 

[flawless]

so I should ignore the psi measurement while driving or any measurement not in the morning?

 

[69887]

so I should ignore the psi measurement while driving or any measurement not in the morning?

Yes, but if you don't already have one, I would recommend a digital tire gauge (about $12) for better accuracy.

When we say "cold tire pressure" that means average daytime temps, not the lowest temps if you park outside at night.

 

[John Doe Junior]

As stated, your tire pressures should be checked when the tires are "cold". Also, NOT when the vehicle has been sitting out in the sun. The tires will absorb heat and the pressure will increase just while just sitting out in the sun not being used. I prefer to check mine when the car has been in the garage unused and out of the sun for at least a few hours. Always to 35psi.

 

[billt460]

....My tire's maximum inflation spec is 51 psi. I like the ride stiff and other reasons, I pump them to 40-42 psi, dêpnding on how much treadlife I got left.

40-42 PSI cold here as well.

 

[driz]

35-37+- PSI does seem to take some of the shock out of bigger bumps in the road. I used to keep my tires at max pressure listed on the tire with the old style. With the low profile I found it’s just too harsh for my liking . The car seems to take more of a beating than it should as well.


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[RTexasF]

so I should ignore the psi measurement while driving or any measurement not in the morning?

Correct unless it is obviously low. You know when they heat up pressure increases so why would you check PSI after driving? On the other end if it is 0º F your tires might read 25 psi or less and the TPMS light will be on.

 

[driz]

I often leave the monitor screen on while driving. The pressures usually wander 3-7 PSI upwards and almost never are identical.
Those low profile tires don’t hold much air so if you pick up a nail you don’t get nearly the time to get off the highway you used to have with old style tires. If you see one starting to lose pressure you’ll have plenty of time find a safe place to change a tire . If you wait for the idiot light you may well not get very far. That’s my theory anyways and I hate screwing around with changing a tire near a busy interstate . Too many testers and airheads going by with their heads up their rumps for me.


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[Luftmasse]

35-37+- PSI does seem to take some of the shock out of bigger bumps in the road. I used to keep my tires at max pressure listed on the tire with the old style. With the low profile I found it’s just too harsh for my liking . The car seems to take more of a beating than it should as well.


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With lower profile tires, to protect the rim from potholes, it would be ideal to keep it at higher PSI.
Of course it depends on what kind of tire you have and treadlife left.

 

[billt460]

With lower profile tires, to protect the rim from potholes, it would be ideal to keep it at higher PSI.

That is one of the reasons I never let mine drop below 40 PSI.