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Recommended Tire Pressure for 4.80-12 Load Range C Trailer Tires on a Jon Boat Trailer  

Question:

What pressure should I run for 4.80 x 12 load C pad star tire on a trailer carrying 14 foot Jon boat with motor?

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Expert Reply:

All of the 4.80-12 load range C trailer tires that we carry are rated for 90 psi. Trailer tires should always be inflated to the maximum psi indicated on the tire sidewall. this is because trailer tires are built with a thicker sidewall than passenger vehicle tires to handle more vertical load. If under inflated the thicker sidewall generates excessive heat and can lead to failure.

expert reply by:
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Michael H

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