Tire PSI?

[Anonymous]

I had to get new tires on my car and on the drive home I noticed that the tires were filled to 38/39. The recommendation on the sticker of my car says 30. I asked my husband to take some air out but he thinks they wouldn’t have filled them that much if it mattered. But it’s hot out and I do a lot of freeway driving, and I was always under the assumption that the tires heat up and the air expands even more. This has to be dangerous, right? Is it normal to overfill like this?

[Anonymous]

Some TPMS also come on when TP is too high. I'd say it's a little high but if you're feeling unsafe, drop it lower yourself at any gas station.

[Anonymous]

hybrids like higher pressure for better mpg. but results in a harsher ride and longer tire life

32-35 psi is the norm.

[Anonymous]

You take it back to where you installed the tires and have them adjust pressure. Remember your sticker is for cold air so if you have to drive to tire shop on a hot day and if they have to release some air out of your tire, they would have to get to 32/33 psi to get cold air of 30 psi.

Or have your husband release the air at home in the morning until it reads 30.

[Anonymous]

Anonymous wrote:You take it back to where you installed the tires and have them adjust pressure. Remember your sticker is for cold air so if you have to drive to tire shop on a hot day and if they have to release some air out of your tire, they would have to get to 32/33 psi to get cold air of 30 psi.

Or have your husband release the air at home in the morning until it reads 30.

They didn’t get it right the first time, so it’s doubtful they’ll not be able to screw it up again.

Plus, I’ll bet they installed your lugnuts with an impact gun when they put the tires back on, instead of doing it by hand with a lug tool. Because these guys sound lazy and stupid for overinflating your tires, and thats the same kind of dumb stuff they’d also do. That means 6 months from now after a bunch of heat-up and cool-down cycles, your brake rotors will become warped. Then you’ll have to replace them at about $350. All because they screwed them up.


If it hasn’t been too long, you should jack each wheel up, one at a time, and loosen the lugnuts on each wheel, to the point where the wheel wobbles a liitle, then carefully reseat the wheel, and properly re-tighten the lugnuts in a star-patern, making three passes, with the final pass going to full tightness. This will save your brake rotors.


I tell my guys if ever catch anyone reinstalling lugnuts with an air impact gun that I will fire them right there on the spot.