Michelin tire blow out!!

pnichols wrote:
Roger,

I read some of the info at the "Tireman9" website and want to add one comment regarding a discussion I read there about the importance/meaning of a tire's Load Range.

It's true what was said about a tire of a given Load Range at any given pressure not being able to (safely) carry any more load than a tire of lower Load Range at the same given pressure.

However, nothing was said of the other reason to go to a higher Load Range - not related to load carrying ability. That reason is tire ruggedness and reliability. Going to a higher Load Range gives one stronger construction (so as to withstand new higher pressures by design), but if you stay at the old pressure with the higher Load Range - you get improved failure-proofness at any rated pressure.

When I understand it right is that you state that if a sertain C-load tire can stand 1800 lbs at 50 psi , then a G-load tire of same sises can stand also 1800 lbs at 50 psi , not more but no less.

If I understand that right , then its not true.
That G load can then only carry ( estimated) about 1600 lbs at 50 psi.
The reason is that the stiffer tire , because its stiffer, has a larger overgoing curve from the radius of unloaded tire to flat on the ground, wich makes the surface length on the ground, and by that the total surface on ground , less. And because load to carry = surface X pressure , you need higher pressure to compensate for the lesser surface to get the same load to carry .

Or as you state with the same pressure there has to be lesser load on the tire because of the lesser surface on the ground, at that same deflection of tire.

Once made a picture of it to explain, sertainly not totally right but gives an idea .