Tire pressure in excessive heat

Yeah, I don't climb curbs either....

 

Not really, and I am nearly always in a 300 in or longer truck.

 

I don't carry dunnage. And yes. Curbs are unavoidable sometimes. For me anyways.

I have a lot of tight places and no moveable axles. My 53 is all the way back.

 

check the tires cold.
after a break and they haven't been running.
set anywhere between 100 and 110 and don't touch them.
they're made to expand with the temperatures the soft rubber is not good to be ran low..
back in the days when you had the non rolling resistance in the good old hard call rubber that was a different story..
even your standard low profile until they went to these soft rolling resistance compound..
see all these people that live out in Phoenix out the dry desert down in Florida where you got insane heat they don't sit there and keep changing the air pressure in their tires..
the key in any vehicle is always check them cold.
don't worry if it says 1:25 or 1:20 because it's what it's going to do as long as you check them when they're cold..
just remember letting the air out of the tires when they're hot when it comes time to check them cold they're going to be that where they need to be..

 

May be difficult, find something to soften the jump. Some wood, couple rocks.

 

I would be curious to know how many people are aware of the speed ratings on their tires, betting there's a couple that don't.

 

A couple? Theres a lot.

How about this...on the sidewall where it states max load @ certain psi. People read this as max psi. It doesn't actually tell you what the max inflation is. Just what the tire manufacturer recommends (per their warranty) as a max weight for a given psi.

 

You're so right.
I get a lot of goofy looks from shop guys where I get the oil changed on my pick up.
I know they're going to inflate them to max pressure and tell them to put a few pounds less air in the back tires because the back is lighter than the front, the truck rides better and gets a little better traction on snow and ice.
If I need to pu a load on or pull a trailer it's no big deal to air them up.

Same when I put a new set of tires on my old 63 Dodge, 225/70/15 on the front and 275/60/15 on the back to keep the tire diameters near the same trying to keep it looking close to stock so them pesky 5.0 Mustangs and Chevy dudes wouldn't get scared off before they got whooped.
Car rode like a hammer for the first couple blocks until I stopped and let some air out of the back ones, improved ride and traction.
(34 psi front, 28 psi rear)

 

The consensus among tire technicians is to inflate tires in “cold” state. You may even see the word “cold” written right next to the PSI on the tire sidewall. What this means is to inflate your tires before sunrise (or at night time) and after your tires have not been driven for over 4 hours. You see, tire PSI normally increases due to sunlight, ambient temperature, and road friction (when tires are rolling).

The appropriate PSI to use, usually ranging from 80-110 PSI, depends mostly on the tire size/type and the weight you typically haul. The more weight, the more PSI. The standard PSI most fleets will tell their drivers is 100. Michelin actually has on their site “Load (Weight) & Inflation” charts to know the right PSI for your Michelin tires. However, I will add that I do not agree with all of their recommendations, specifically when they say 80 PSI is sufficient for tires in a tandem axle of 8 tires. I used 103 PSI on my previous set of 8 drive tires and never experienced over or under-inflation tire wear, but they were not Michelin.

Yes, do NOT deflate tires, assuming you correctly inflated them. I wouldn’t worry unless they start going over 130 PSI. I inflate mine at 105-110 PSI cold, and I usually gross over 75k.

Load & Inflation Tables | Michelin Truck