Tire pressure question
Hi all. Apologies again for being the guy that seems to be asking too many questions. I am taking the safety of my family very seriously, so please no guy slapping himself in the forehead icons... ;...
Forum Discussion
Going from the specifications 8500 lbs GVWR.
4 tires on the road 2 axles 4 tires.
And your ST tire specifications so for max speed of 65 m/h.
Filled in my spreadsheet gives 54 psi .
But if you would give the tire a deflection that belongs to a speed of 99m/h and even some reserve for unequall load R/L so yust no bumping , the spreadsheet gives 65 psi.
So my advice is to fill to 65 psi cold pressure, and then no bumping and still acceptable grip.
But if in use it drops to 54 psi real pressure , with a bit of luck you did not damage the tires .
And this luck is that your pressure measurement is 100% accurate ( wich it never is), and you did not have more then a combined overload and unequal load R/L of 850 lbs, and you did not drive for even a minute over the 65m/h.
4 tires on the road 2 axles 4 tires.
And your ST tire specifications so for max speed of 65 m/h.
Filled in my spreadsheet gives 54 psi .
But if you would give the tire a deflection that belongs to a speed of 99m/h and even some reserve for unequall load R/L so yust no bumping , the spreadsheet gives 65 psi.
So my advice is to fill to 65 psi cold pressure, and then no bumping and still acceptable grip.
But if in use it drops to 54 psi real pressure , with a bit of luck you did not damage the tires .
And this luck is that your pressure measurement is 100% accurate ( wich it never is), and you did not have more then a combined overload and unequal load R/L of 850 lbs, and you did not drive for even a minute over the 65m/h.
