[2airishuman]

2 clarifications regarding my last post...

d rated marathons are rated to 2540 lbs...
at 80% load (2030 lbs) 45 psi is the recommended inflation,
so one would inflate to 55 psi and still be under max inflation...
IF wanting to travel at 65-75 mph

the goodyear care guideline...
"based on industry standards, if tires with the ST designation are used at speeds between 66 mph and 75 mph,
it is necessary to increase cold inflation pressures by 10 psi above the rocommended pressure for the load.
-do not exceed the maximum pressure for the wheel
-if the maximum pressure for the wheel prohibits the increase of air -pressure, then the maximum speed must be restricted to 65 mph
-the cold inflation pressure must not exceed 10 psi beyond the inflation specified for the maximum load of the tire."

my unit 3 axle 11,500 lbs gwr....6 tires d rated to 15,000 lbs

properly loaded to the max of 11,500 lbs the tires are at 75% capacity,
so from the inflation tables 40-45 psi is recommended.....at 65mph and 55psi at 75 mph.

and as i often carry/travel at 10,500 lbs...
the tires are at less than 70% max capacity...1700 lbs each.
so the recommended pressures go down to 35 psi!!! and at higher speeds add 10psi to 45...
still very soft.

a doube axle 30/31 is an entirely differnt critter....gwr 10,300 lbs. on tires rated to 2540x4=10,160 lbs.....nearly maxed out! so recommended pressures are 65 psi which is also maximum inflation pressure...

could it be that the heavier dual axle trailers max out and stress out the marathons moreso than other models? and that some of these tires are underinflated, over load....and exceeding 65mph?

on what size/load rated trailers are tire failures reports?

does anyone understand this post?

cheerrs
2ari'