Tire pressure in excessive heat

I should add that I’m only speaking about the steer tires at the shown psi. You have leeway with your drive tire psi provided you’re running duals. I’ve never ran wide singles so I don’t want to speak out of school on the psi to run with them.

 

Modern tradials will take the heat at max pressure, rolling resistance is better at max pressure too.
Anything under max is a death sentence to recaps, I have actually had caps that would outlast virgin tires due to the rubber compound used by the recapper.
Now the smaller the tire is, the more heat it will build, when you run 17.5 trailer tires with much weight, run max pressure for sure and they run more pressure, but a guy needs to slow down too, not just when it is hot out either.
You guys should have been trucking when we were running tube type bias tires, it made trucking soooo much fun. any recap these days is better than anything available back then. lol

 

They cant help them selves, you did the right thing, ask what you do not know. If more drivers did this it would be much safer out here. Thumbs up..

 

I never had trouble even on the hottest of days. We did however take a number of breaks in the hot of day and did not let those tires which are replaced annually at first frost anyway get into trouble. Our boots would have some trouble before the tires themselves would.

I remember one particular day in NV east of Death Valley it was closer to 105 outside not accounting for sun and humidity which was dry. It was only 80 in the cab full air in both ends. Reefer was crying in high end as it was all that day on dough at -20 set running around -10 or so.

That was about the worst of it. As much as we ran as a team we rolled the Sonora in the SW without trouble. We did however ease it down the freeway, if it's 70 we are governed at 63 anyway. So we maybe did 60. Think the tires carried 100 pounds on all of them when put on new.

As a side thought we never run recaps. And we do not endure lost tires on seacans. They are like bombs sometimes taking out the other tire on the same wheel.

We have had tires go bad due to sidewall defects and so on. Here in Arkansas we run Nitrogen in our vehicle tires never had a problem in the heat here which I might add is cranking a bit this season. We did have trouble with inferior Goodyears going through three sets of 4 defectives all together replaced within 30K miles. We will not be buying that brand again in this lifetime. I don't know whats changed with them but the sidewalls were really poor in most of them.

 

Man these folks know the tire game. I will 2nd on no caps. If you like them, run them. Another thing..new tires with the thick tread is more weight spinning around fighting centrifugal force. When the rubber seperates it heavy (that old gator).Usually never an issue, but food for thought on a very hot day.

 

As long as you dont run capps on any position you lessen the likely hood of a blowout significantly.
The other thing is driving over things like curbs, potholes, large rocks, or anything that will cause a crushing action of the tread or sidewall. bruises the casing and sets the trie up for a blowout latter, then when that tire gets into a temperature extreme that little evil damaged or bruised casing will let go. That's why sometime when we have to back over a curb you'll see us old timers put dunnage in the gutter, thats so we don't damage the casing.

 

Nobody up here does the dunnage by the curb thing, I have made several foremans fighting mad because I would not jump a curb with a gravel truck, and it was not even my truck.