1/12/2024 0 Comments Trailer tire psiSo, moral of the story - always fill your trailer tires to whatever rating is stamped on the side as "Cold PSI" (which with Hankook - it just states "PSI"). This is apparently normal and is incorporated into the design of the tire. The tire will heat up during towing, meaning if you pump it to the cold PSI of 110, it might run 120-130 PSI while towing heavy. They are designed to be load bearing - and underinflation causes the sidewall to bend to a less optimal shape under max load, causing the increased heat buildup that leads to blowouts. Equipped on more than 1 million trailers, Meritor Tire Inflation System (MTIS) helps keep tires properly inflated to reduce wear and increase fuel economy. The sidewalls on trailer tires are different than LT tires. 80 PSI in a 110 PSI rated tire) will cause excessive heat buildup in the tire and is apparently THE major leading cause for tire blow outs. ![]() ![]() Apparently ALL trailer tires should be filled to the cold PSI rating that is stamped on the side of the tire (in my case, 110 PSI). The PSI stamped on the tires is the "cold" pressure rating. I was recently told by a friend that I should always run trailer tires at the max rating - which for these would be 110 PSI.Įdit: I just had a back and forth with the tire manufacturer (Hankook). I routinely tow close to max capacity for the trailer - and always try to run the tires above 90 PSI. As the title suggests, should I be running the max pressure rating in my trailer tires when I am towing? The tires are rated to 110 PSI. TIRE INFLATION EQUATION: Tire Weight / Tire Pressure Load Capacity Pounds per PSI Example: At 80psi, a 265/75R16 10ply itire will carry 3,085 pounds of.
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