Correct tire pressure in cold temperature?

[huunvubu]

Next time you have service, get your service dept. to swap your air for nitrogen. It will maintain the correct air pressure through temp changes. Tire size will remain the same too. We run nitrogen in race car tires so they don't swell and change the stagger when they heat up. It's a little pricey, but worth it.

Nitrogen in Passenger Tires: Too costly, too much hassle and does not really make a difference:

Should You Use Nitrogen in Your Car Tires?

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We first ensured that we had 95 percent nitrogen purity in the tire—the claimed limit of our nitrogen system, which generates nitrogen gas from ambient air and removes water vapor.

We filled one tire per model with air and another with nitrogen. Both were filled to 30 psi (pounds per square inch) at room temperature. We set both tires outdoors for one year, then checked the inflation pressure at room temperature again.

Both tires lost pressure over that time, but the difference in loss was minimal. The average loss of air-filled tires was just 3.5 psi from the initial 30 psi setting. Nitrogen-filled tires lost an average of 2.2 psi.

The results show that nitrogen does reduce pressure loss, but the reduction was only a 1.3 psi difference from air-filled tires over an entire year.

“Our test showed that while nitrogen has some advantages, both nitrogen and air-filled tires lose pressure over time,” Pszczolkowski says. “It is important that car owners routinely check their tire pressure.”

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[SLINGSHOT]

P T Barnum was right.

 

[Saul T Knutz]

Your tires were filled with summer air, you gotta switch over to winter air now...lol j/k j/k

 

[KGiles]

Nitrogen in Passenger Tires: Too costly, too much hassle and does not really make a difference:

Should You Use Nitrogen in Your Car Tires?

----------------------------------------------------------------------------------------

We first ensured that we had 95 percent nitrogen purity in the tire—the claimed limit of our nitrogen system, which generates nitrogen gas from ambient air and removes water vapor.

We filled one tire per model with air and another with nitrogen. Both were filled to 30 psi (pounds per square inch) at room temperature. We set both tires outdoors for one year, then checked the inflation pressure at room temperature again.

Both tires lost pressure over that time, but the difference in loss was minimal. The average loss of air-filled tires was just 3.5 psi from the initial 30 psi setting. Nitrogen-filled tires lost an average of 2.2 psi.

The results show that nitrogen does reduce pressure loss, but the reduction was only a 1.3 psi difference from air-filled tires over an entire year.

“Our test showed that while nitrogen has some advantages, both nitrogen and air-filled tires lose pressure over time,” Pszczolkowski says. “It is important that car owners routinely check their tire pressure.”

I stand corrected.

 

[Droid82]

40 is a little too high. Someone in Mexico doesn't know how to set tire pressure. Mine came in very high and the dealer that prepped it somehow didn't notice it either.


As far as the tires holding the pressure, you will notice a difference when the weather gets cold. I had to put in a couple pounds when the temps dropped. It is just something you will have to keep an eye on. I would recommend the 35 lbs that is on the door jamb sticker.

They come from the factory with high pressures to keep from flat spotting if they sit for a long time at the factory. It's the dealer's job to adjust them as part of the PDI process

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