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Should Trailer Tires Always be Inflated to Their Max PSI

Question:

If the rim is not rated for the full weight of the load range D tire, will it hold the 100 lbs of pressure it calls for? And that is at cold temp pressure right, so when it warms up it could be 5 to be 15 lbs more. What Im trying to figure out is, is there any point of buy the better tire Load D if the rim cant support the air pressure? Or can l run the D tire at 75 lbs which is what the C tire calls for or is that not good for the tire. I just want the best set up I can get to run 70 mpg, carrying 1500 lbs, and off road at times dirving on pointy rocks.

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Expert Reply:

On a towing setup you are always limited by the lowest rated component as the overall towing capacity since that is the weakest point.

When it comes to trailer tires you always want to have them inflated to their max psi when cold. Not only do you get the full capacity at the max psi, you also will generate less heat in the tire since there won't be as much flex in the sidewall, you'll get better wear and better fuel mileage.

The Kenda 5.70-8 Bias Trailer Tire with 8" White Wheel # AM30153 inflated to its max psi of 100 psi would be your best option. You would be limited to 900 lbs per wheel of capacity since that is the wheel capacity.

Unless otherwise stated trailer tires are not rated to exceed 65 miles per hour. If you exceed 65 mph, heat could build up in the tire and cause it to break down and fail. If a tire is rated to run at a higher speed, this information should be listed on the trailer's sidewall.

I attached an FAQ on trailer tires for you to check out also.

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Jameson C

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