pacofortacos
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- Apr 18, 2017
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Someone questioned the ST vrese LT tire on trailers:
ST have stiffer sidewall for decreased flex (resist trailer sway), larger steel wire, and resist rolling under the rim while turning (i.e.tandem and greater axle trailer)
https://www.fateunbound.com/trailer-tires-vs-light-truck-tires/
"Goodyear Tire & Rubber Company stated, “The major difference is reflected in the polyester cords used in ST tires. These cords are bigger than they would be for a comparable P or LT tire. Typically, the steel wire also has a larger diameter or greater tensile strength to meet the additional load requirements. Because of the heavier construction for an equal volume of air space, an ST tire is designated to carry more load than a P or LT tire.”"
"T tires are designed for a limited amount of rolling resistance"
https://rvingwithmarkpolk.com/2012/11/08/trailer-towing-st-tires-vs-lt-tires/
The tires on the new 5th wheel, where most likely under inflate from sitting in a lot. Air pressure is the most important part of a trailer tire as an under inflated tire heats up faster, will lead to a blow out quicker then a properly inflated tire, particularly when running at speeds well above recommended tire speed. If you think about it they say to increase air pressure if running ST at higher speed as this decreases rolling resistance and allows the tire to run cooler at that speed....Resistance causes heat, heat increase molecular activity in the tire compound and the air in the tire and can result in uncontrolled increase in air pressure. Somethings go to give and metal does not give as easy as rubber.
These are the tires I run, they have the stiffest sidewall I have ever seen in a tire - you literally cannot push the sidewall in (even unmounted) more than a fraction of an inch.
They have more capacity than my axle is rated for and significantly more than the load on them.
https://www.tirerack.com/tires/tire...65R6RH12&vehicleSearch=false&fromCompare1=yes