Saturday, Jan 31, 2009 at 17:36
Hi Peter
Its a straight out mathemacitcal relationship so it must.
However I appreciate that some might require more than me just saying so , so a add the following Toyo Tire note cut from the rv website which give substance to my asseration that typical use is
rated load pressure + 10
Robin
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It is important to note that the inflation pressure molded on the side wall of a passenger-car tire is the maximim air pressure for that tire. That is not the case, however for light-truck tires.
The inflation pressure molded into the sidewall of light-truck tire is the minimum (that's right, the minimum) air pressure required for that tire to carry the maximum weight molded into the sidewall of that tire. Using less air pressure means the light-truck tire must carry a lighter load.
While the tire-load rating molded into the sidewall of a light-truck tire should not be exceeded, it is generally recommended that the tire be inflated to the minimum pressure required to carry the load plus an additional 5 - 10 psi. The extra pressure will help the tire run cooler. It also acts as a reserve to offset normal loss of air pressure. But the extra pressure will not add to the tire's load carrying capability. Just keep in mind that the maximum air pressure for a light-truck tire is the minimum air pressure molded into the side of the tire plus 10 psi.
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