Cold PSI for tires

[Witch Doctor]

This may sound dumb to some but I need to know about the tire pressure. Okay I have been watching my PSI at home. The weather in the morning is 20 degrees cooler then in the afternoon. The PSI will increase in the afternoon sometimes by 10lbs PSI. Here is my question. I plan to go to Florida in Dec. The normal temp here will be in the high 40 or 50's. My tires will reflect that in PSI. So when I leave Virginia do I inflate that cold morning to 65 PSI and just drive South? Or how do I compensate for the warmer weather that I will hit which with driving will also raise my PSI. I'm getting these reading from my TST system. Thanks for your answers and advice. What CP should I use or just leave them. They can't all have leaked the same out within 1 degree, so has to due to temperature in my mind...

[ependydad]

Inflate to 65psi and drive south.

[OldCoot]

Adjust each morning to the 65psi. Some mornings you may have to inflate and some mornings you will have to deflate. That's what the monitor/sensors are for. Start each morning on 65psi and don't mess with them that day. You only drive a couple of hundred miles and the temperature will not increase that much in 200 miles.

[SKnight]

Set them to 65 cold and check it on your way out every morning. Even if the ambient temps get high enough to cause a 10PSI increase it won't hurt anything.

[Lloydg]

Originally Posted by gljurczyk

This may sound dumb to some but I need to know about the tire pressure. Okay I have been watching my PSI at home. The weather in the morning is 20 degrees cooler then in the afternoon. The PSI will increase in the afternoon sometimes by 10lbs PSI. Here is my question. I plan to go to Florida in Dec. The normal temp here will be in the high 40 or 50's. My tires will reflect that in PSI. So when I leave Virginia do I inflate that cold morning to 65 PSI and just drive South? Or how do I compensate for the warmer weather that I will hit which with driving will also raise my PSI. I'm getting these reading from my TST system. Thanks for your answers and advice. What CP should I use or just leave them. They can't all have leaked the same out within 1 degree, so has to due to temperature in my mind...

Good Question! I've wondered that myself but my temperature is more extreme than yours. We'll be leaving from Michigan for Florida at the end of January and the temperature when we leave could easily be below 0. The answers you received will help me now.

[Kenny kustom]

Fill tires cold.
Drive.
Whenever you stop long enough for the tires to cool, you can re adjust if needed.


2008 F350 CCSB V10
2016 Sabre 36QBOK

[A32Deuce]

I go to Florida every year. Set cold pressure here in NJ and check every morning. Sometimes I don't have to change till Georgia!

[phillyg]

Set psi to max pressure before the tires are driven on, with no regard to ambient temps wherever you're located. Tire mfgrs. compensate for a range of daytime temps.

[youroo]

Glen,start with your tires on the East side -10 of the west side,drive till Noon,now take a break,now fill the East side +10 and lower the west side -10 and drive South until dark,now fill Both sides the same! Are you kidding me,do you people REALLY think OTR Truck Companys have their drivers adjust Tire pressure every day? Youroo!!

[wanderingbob]

Put 65 while cold and only check when cold !

[siskom]

Stick with whatever is marked on the tire cold you will not go wrong!

[Tall frog]

We have been thinking of getting a tire pressure monitoring system and have questions, internal or screw on senders? What brand of unit? I am also concerned about keeping tires up to proper pressure. We have the factory china tires that are about 2 years old with 3,000 miles or so. Any help would be appreciated.

[elchilero53]

Fill to 65 psi cold and go for it. Nothing will happen. Filled mine to 50 psi cold at a temp of 42 degrees in the mountains of Northern New Mexico and drove home to Texas. Checked them in the early morning at home after sitting overnight. Still 50 psi at an air temp of 58 degrees.

[ependydad]

Originally Posted by Tall frog

We have been thinking of getting a tire pressure monitoring system and have questions, internal or screw on senders? What brand of unit? I am also concerned about keeping tires up to proper pressure. We have the factory china tires that are about 2 years old with 3,000 miles or so. Any help would be appreciated.

TST 507 with flow thru sensors. If you can balance the tires with the sensors on, all the better.

[siskom]

Bottom line is if you make it a habit to check and fill if necessary each tire before you start your trip you will be fine. If you have a flat/low tire you will know it by poor handling. I have remote fill valves on my dual wheels and they are nice but they also create a leak point. A tire will not loose that much air during a trip unless you have a leak. I get into a habit to visually look (kick the tires) before each leg of the trip, no problems. The monitors are good but something else to worry about working right, what did we all do before monitors?

[ependydad]

Originally Posted by siskom

The monitors are good but something else to worry about working right, what did we all do before monitors?

What did we all do before indoor plumbing? Made it work. But why not use the tools available to us now?

They aren't a cure all and I can't be sure I would have had issues, but I feel like my TPMS saved me from damage on a recent drive. On a tire that I suspected had issues, I hit a bad pot hole, and my TPMS immediately informed that that I was losing pressure. In just a couple of minutes, my 80psi tire was down to 34 and falling. Once I was pulled over, it kept dropping and within another few minutes it was in the teens. Had I kept driving, my bet is that my tire would have torn itself up and made a mess of the camper.

http://nowornever.learntorv.com/2015...re-change.html

[mark0224]

In the summer you set to 65 cold and I bet hot they are above 70 or more so I really don't believe this time of year they will exceed the same even when you go further south. Might go up if the temp goes from 20 to 85 outside but not that much and if you are concerned make a noon time stop and ck them after you've had lunch and they have set for a bit.

[Tall frog]

Thanks ependydad, we just bought a 6 sender unit figured I could use the extras on the Spain both tt and tv.

[Tall frog]

I hate autocorrect I ment spair tires.