Forum Discussion
Planning
Oct 23, 2018Explorer
JIMNLIN wrote:
some rv folks get into when replacing tires on a trailer......
Using the inflation chart to get the pressure for the load, I inflated to 80 psi which was good for 4500 pounds per tire. With the first tow with these tires to Kansas City, I have made this trip to the speedway several times before, I was down almost 2 mpg both ways. The tires were 20*-25* hotter than the truck, which I have never experienced before. I inflated them to the side wall pressure, 125 psi for max load, before our trip to Florida. Now the tires run 5*-10* cooler than the truck and my fuel mileage is back where it used to be. I have always run max pressure up until I installed these tires, with what I have experienced, I will continue to run what the side wall indicates.
Cold inflation pressure set to the sidewall pressure (CIP at 68F prior to driving for the day) is recommended for towed vehicles due to increased interply shear.
http://www.rvtiresafety.net/2013/11/interply-shear-and-other-techno-babble.html
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