Originally Posted by l1v3fr33ord1
A question for you: Are there cases where you (or the manufacturers) would recommend inflating a tire over the marked tire sidewall pressure?
If not, I suggest that the definition you've provided is a statement that a tire is designed with an above-the-sidewall-marked inflation safety margin, which I think is something most everyone assumes is the case.
I don't have access to the posts of the guy who keeps saying this, but see snippets of his remarks in your quotes.
Attached is an example of what fuels this endless semantics loop we often see, here at iRV2.
I highlighted the offending passage, which is technically true but fosters a misunderstanding among users.
Notice that the publication immediately follows with an assurance that overinflation will not be achieved with their product.
Any TPMS user can easily watch the process to which they refer: For example, the Patriot Thunder
is loaded to capacity on its steer axle; so, when those tires are inflated to the manufacturer's table value, it matches the sidewall psi of 120. Indeed, as we roll down the highway and tires achieve their normal 123F under standard highway conditions, the TPSM readout climbs about 20 psi.
That pressure, plus a safety margin, is engineered into the tire.
But, the higher value is moot to operators, who are restricted to the sidewall value. Inflating beyond that, and then warming the tire to operating temperature puts the net pressure into unknown territory, and a dangerous condition is generated. Despite the inherent fun of linguistic gymnastics, let's not lure operators into that rabbit hole.
I'm sure there are other sources of this misleading factoid, this is but one. Highlighting makes the passage easy to find; but, if you have time, read the whole thing. It contains some great information.
Source: Psi Tire Inflation
, makers tire over-pressure fuses and of automatic inflation systems.
Fun Trivia This morning, I'm flying a Boeing 777-200IGW to South Korea. Each of my 14 tires is monitored for temp and pressure.Due to the fact that we'll load each of the mains with upwards of thirty tons and roll them along the concrete at about 180 mph, we take this stuff seriously. Interestingly, we have to inflate with nitrogen. More that one airliner that inadvertently was serviced with air has been lost, after takeoff. Similarly, we strictly adhere to a range of psi values, not just a minimum. Since I brought it up, 180 and 200 psi. And, yes, the tires are engineered for the resulting higher value when heat is applied, but it would be lethal for us to tread into that unknown terrain, for reasons I hope everyone now understands.