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Hay_Man 01-05-2013 15:11:24 76.1.73.79 Report to Moderator

I run tires with heavy loads on them, so they get hot and the air inside them gets hot and expands, causing high pressures. I have noticed with the quality of tires going down these days, air will leak out easier. The air molecules are able to leak out past the tire plies with the heat and higher pressures. The heat deteriorates the tire material and the air is able to escape more and more. Nitrogen has larger molecules which stay in the tire better under pressure. But I don't use Nitrogen in my truck tires. I have noticed I have to add air more to the low-profile tires on the cars nowadays. They just don't hold enough volume of air to maintain pressure for very long. I guess that's why some shops put Nitrogen in those little tires. I think Green Slime helps seal the tires against heat deterioration and thus helps to maintain air pressure, but sure screws up those in-tire pressure sensors. [Reply]   [No Email]