Originally Posted by SteveSkinner
Absolutely no problem here
Tires that are run flat and consequently heat up should not be re pressurized as the potential for instant explosive failure is very high.
Since you are replacing the tyre any way I wouldn't worry at all
Load sharing with the tag should not produce any issues IMHO
( I spend $45000 per month on truck tires so I speak with some knowledge)
Absolutely never air up a tire yourself if it has been run low on air. The result is called a "zipper"
Kevin Rohlwing, TIA Senior Vice President of Training: “A zipper rupture is a spontaneous, explosive burst of compressed air that occurs in the sidewall flex area of steel cord radial truck tires. It usually follows the circumference of the tire and can range anywhere from 12 inches to over 3 feet in length.”
How dangerous is it?
“It can seriously or fatally injure if the proper procedures are not exactly followed.
“Zipper ruptures don’t care how long you’ve been in this business or how much experience you have. Sometimes the signs of a potential rupture will be apparent and sometimes they won’t.
“The problem with zipper ruptures is the unpredictability associated with ‘fatigued’ or damaged sidewall cables.”
How can we identify a potential zipper?
“The key is to thoroughly inspect both sidewalls prior to inflation. Any undulations or bumps could be a sign.
“If the tire was suspected to have been run at 80 percent or less of normal operating inflation pressure or was overloaded, it must be completely deflated, demounted and inspected.
“Like any machine, if a tire is worked too hard for too long, it’s going to break down. Once the assembly reaches less than 80 percent of the recommended inflation pressure, the tire is forced to flex more and generate a lot of heat.
“The best thing to do is to treat every tire – even new ones – as if it were a potential zipper.
80%. That means if your normal pressure is 100 psi, at 80 psi or less there can be big trouble.
Be safe, travel safe.