Originally Posted by TandW
I can't believe from your formula that some apps would only require 50# in a 95# tire. Did you own a Ford Explorer in '94?
That calculation isn't the be all and end all of the process.
It is the OBJECTIVE starting point.
The wheel rating is the next factor (more for older units).
If you are inclined you can balance that against what your chassis maker recommended 5, 10 or 20 years prior too.
As to your extreme example...
what I suspect happens is that tire salesmen push (and nervous owners accept) 14ply G rated tires when a 12 ply F will serve the need of their weight & load more than adequately. Follow?
And of course some common sense has to be applied too. But just because the side wall says 95 is NOT the reason to actually inflate to 95.
95 may in fact be correct (I'd doubt it) but please do so based on rational and objective data. Clear?
I hope everyone reading this thread KNOW their rig weights and tire ratings and aren't depending on anecdotes and conjecture and old wives tales to base their decisions on.