What Is A Good PSI For A 10 Ply Tire Besides 80 PSI?  

Question:

Expert Reply:

Hello Humberto, welcome back. For the 10-ply tires, or any trailer tire, we always recommend inflating them to the max PSI listed on the sidewall. Most trailer tires are speed tested and load rated at max PSI, so inflating them less than that leads to an unknown speed and load rating which can be unsafe. Max PSI prevents heat buildup and decreases blowout risk too.

Some high-end tire manufacturers like Goodyear have charts that list the load capacity at different PSI, but for tires like the Karrier # AM32684 you were looking at, I really have to recommend only doing the max PSI. It is possible to go slightly under that, but you need to be careful not to overload them since less PSI leads to a lower weight rating and kind of puts us in uncharted territory.

expert reply by: Jesse M

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Karrier ST225/75R15 Radial Tire with 15" Sendel Aluminum Wheel - 6 on 5-1/2" - LR E
(click to enlarge)