Best outdoor temp to check tire pressure

[davendeb]

Outdoor temp doesn't matter really. It's not like you can wait for the right time of year to check pressures. Just set pressure for appropriate psi no matter what the temp it. Do it while tires are at ambient temps, not while they're warm from recent use.

[jadatis]

Originally Posted by hartlenb

You need to measure the tires when they are at ambient temperature. Then you can adjust for that temperature being above or below 65F. I saved this table from another post here on iRV2

I Wonder who made that list and what his/hers credentials are.

Had a long discussion in other topic, but still I am convinced , I am right , and that list comfirms my idea.

Saw this was an older topic from april this year, and poster before me made it actuall again.

But i that document they warn not to go lower when temps below 65 degrF.
My idea is that you can within a certain range.
When far beow freesing , the deflection gets more important,but who goes camping in those temperatures.

But certainly you must not lower the pressure to advice, when 100 degrF cold measured ( when temp in and outside tire the same, is when not driven for hours and no external factors like sunshine on tire)


Here the topic in wich I was roosted by the tire-specialists.
https://www.irv2.com/forums/f258/adjust-tire-pressure-for-cold-weather-558461.html
https://www.irv2.com/forums/f258/adj...er-558461.html

[MN_Traveler]

And ... it is STILL wrong. That chart is pretty looking, but is simple to create in excel, and so is not authoritative. More importantly, it is based on the assumption of what the pressures would do in a tire, based on the ideal gas law, *if* they were inflated at 65 degrees, and then moved out into a higher or lower temperature. That does *not* say anything about how you should inflate those tires first thing in the morning if they are *already* at that higher or lower temperature.

Others in this thread have also pointed out that minimum inflation is constant (for a load), and that it does not change as ambient temperature in the morning changes.

Jadatis, you are self admittedly not a professional and not educated or experienced in this area. Yet you continue to push a dangerous theory, despite the fact that highly educated and highly experienced professionals say your logic and assumptions are flawed. I urge any future readers of this thread to not listen to, and not promulgate jadatis's dangerous advice.

[TXiceman]

Check and adjust as seasons change or you move to warmer or colder areas. There is no single time or place to check your tires. The spring and fall make it very problematic to having the perfect temperature. On a cooler morning, my tires will probably be a few PSIG low, but as soon as you hit the road, the tires pressures will come up from driving and the ambient temperature.

Ken

[ArtJoyce]

Check tires cold in the morning and add air if needed. I air up the tires to 15 plus PSI above the tire load psi chart. It give me a little room on cold day I almost never need to add air. Normally 4 times a year.

[Podivin]

The correct temperature at which to check the tire pressure is whatever the temperature is before you start driving that day.

[Crasher]

Is there any topic that gets discussed more than "Tire Pressure"?? If semi operators spent as much time fretting about and micro managing tire pressures as RV owners do, they would all be in truck stops walking around with a tire gauge in hand. Yes, there is an occasional "tire alligator" on the road, but considering the millions of semi tires rolling, it's pretty rare. I just don't understand why this is such a difficult task to manage for some. In our travels, I "might" adjust the pressure twice a year, but often just once. Any pressure above the minimum to support the load up the the max inflation psi for the tire is good to go. It doesn't have to be complicated.

[Kid Gloves]

Originally Posted by TXiceman

Check and adjust as seasons change or you move to warmer or colder areas. There is no single time or place to check your tires. The spring and fall make it very problematic to having the perfect temperature. On a cooler morning, my tires will probably be a few PSIG low, but as soon as you hit the road, the tires pressures will come up from driving and the ambient temperature.

Ken

There is a single time and place to check tire pressures. In the morning, before the tires have been exposed to sunlight and before the vehicle has been driven. Pressure should be checked prior to each trip. The pressure may not need to be adjusted for months.

There is no perfect temperature. There is no baseline temperature.

A few PSI low on a cold morning is a bit vague. If your pressure is a few PSI below the manufacturer recommended pressure for the load on a cold morning, and you are relying on driving and an increase in ambient temperatures to bring the tires up to the recommended pressure, you are following an incorrect tire inflation protocol.

[MN_Traveler]

Originally Posted by Crasher

Is there any topic that gets discussed more than "Tire Pressure"?? If semi operators spent as much time fretting about and micro managing tire pressures as RV owners do, they would all be in truck stops walking around with a tire gauge in hand. Yes, there is an occasional "tire alligator" on the road, but considering the millions of semi tires rolling, it's pretty rare. I just don't understand why this is such a difficult task to manage for some. In our travels, I "might" adjust the pressure twice a year, but often just once. Any pressure above the minimum to support the load up the the max inflation psi for the tire is good to go. It doesn't have to be complicated.

Crasher - i am with you on that ... but I *do* keep an eye on pressures with tpms, so i am aware of where they sit on any given day. Yeah - i probably need to adjust maybe twice a year. Three times maybe if i am going through big temperature swings.

[HenryH001]

Love’s Truck Stops have a TirePass where you pay $5 and they will check them for you. I haven’t used it but see it being used.

I’ve always thought 65 to 70 degrees is the best temperature to read pressure. If I’m in sub freezing temperatures I’m not going to add pressure and if I’m in 100 degrees I’m not going to let air out. A hammer will tell you if a tire is out however it will not tell you if it’s at 80 pounds or 120. I use a infrared gauge to check running temperature however ambient temperature and direct sunshine will give you inaccurate readings. This is an art and not a science.

[Kid Gloves]

Originally Posted by Crasher

Is there any topic that gets discussed more than "Tire Pressure"?? If semi operators spent as much time fretting about and micro managing tire pressures as RV owners do, they would all be in truck stops walking around with a tire gauge in hand. Yes, there is an occasional "tire alligator" on the road, but considering the millions of semi tires rolling, it's pretty rare. I just don't understand why this is such a difficult task to manage for some. In our travels, I "might" adjust the pressure twice a year, but often just once. Any pressure above the minimum to support the load up the the max inflation psi for the tire is good to go. It doesn't have to be complicated.

Maybe “Gas vs Diesel”?

Despite the simplicity of properly setting tire pressures, a number of peculiar statements, ideas and theories continue to surface. So the discussion goes on.

I disagree with your statement above, that any pressure above the minimum, up to the max for the tire is good to go. The chart for our drive axle calls for a rounded up pressure of 90psi, which will support the RAWR plus about 800lbs. Our actual weight is below the RAWR and I won’t discuss the pressure that we run. I will say that I would never consider 120psi, the max rating for the tire, to be good to go. It is 33% above the recommended pressure.

It’s just too simple to determine and maintain the correct pressure. If anyone knew the minimum to be 90psi, why would they even consider running 120psi?

[Kid Gloves]

Originally Posted by HenryH001

Love’s Truck Stops have a TirePass where you pay $5 and they will check them for you. I haven’t used it but see it being used.

I’ve always thought 65 to 70 degrees is the best temperature to read pressure. If I’m in sub freezing temperatures I’m not going to add pressure and if I’m in 100 degrees I’m not going to let air out. A hammer will tell you if a tire is out however it will not tell you if it’s at 80 pounds or 120. I use a infrared gauge to check running temperature however ambient temperature and direct sunshine will give you inaccurate readings. This is an art and not a science.

Would you provide a source for who created the chart that you posted previously.

There is no art to it. It is physics. Your thoughts regarding a “best” temperature need to be reexamined.

[tropical36]

Originally Posted by Mightymark

2018 Dutch Star
Just wondering what's the best outdoor temperature to base my tire pressure on.
It varies so much in different temperatures so what would be a good baseline.

There is none. Just air them up whenever and for adding 10-15% over the inflation chart to cover all the variables.

[HenryH001]

Originally Posted by Kid Gloves

Would you provide a source for who created the chart that you posted previously.

There is no art to it. It is physics. Your thoughts regarding a “best” temperature need to be reexamined.

Maybe instead of best I should have said base. Yes it’s physics that I’m dealing with but using temperature readings is an art. There are so may variables that effect the readings like the road surface temperature. Even where on the tire I get the reading. It might vary 20 degrees from the tread to the rim. Also how much was I using the brake. How heavy was my load? Are the bearings causing a high reading. Am I on black pavement or concrete?

I started using temperature readings when I drove long haul because in a month I might be pulling a dozen different trailers. I would hammer them to see if they were flat and then take temperature readings every few hours for the first day. If I had an usual high reading for the conditions I knew something was not right. Often the high reading would be on the inflated tire and not the one that was low.